Pennsylvania farm journal - Darlington, J. L. (A.M. Spangler, 1852)

The perfect garden, how to keep it beautiful and fruitful, with practical hints on eonomical management and the culture of all the principal flowers, fruits, and vegetables - Wright, Walter P. (Walter Page), 1864 -1940 (J. B. Lippincott company; [etc., etc.], 1908)

Pesci - Canestrini, Giovanni, 1835 -1900 (F. Vallardi.[1872], 1872)

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)

Petrefactenkunde Deutschlands / von Fr. Aug. Quenstedt - Quenstedt, Fr. Aug. von (Friedrich August), 1809 -1889 (L.F. Fues, 1876)

Petrefactenkunde Deutschlands - Quenstedt, Fr. Aug. von (Friedrich August), 1809 -1889 (L.F. Fues, 1846)

Petro nomine ac imperio primo Brasiliensis imperii perpetuo defensore ... jubente Florae fluminensis icones, nunc primo eduntur ... - Velloso, José Mariano da Conceição, 1742 -1811 (Ex off. lithogr. Senefelder, curante J. Knecht, 1827)

Das Pflanzenreich :regni vegetablilis conspectus - Engler, Adolf, 1844 -1930 (W. Engelmann, 1912)

Philosophical notes on botanical subjects - Bonavia, E. (Emanuel), 1829 -1908 (Eyre and Spottiswoode, 1892)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1866)

Phycologia Britannica, or, A history of British sea-weeds : containing coloured figures, generic and specific characters, synonymes, and descriptions of all the species of algae inhabiting the shores of the British Islands - Harvey, William H. (William Henry), 1811 -1866 (Reeve Brothers, 1846)

Phycologia britannica, or, A History of British sea-weeds, containing coloured figures, generic and specific characters, synonymes, and descriptions of all the species of algae inhabiting the shores of the British Islands - Harvey, William H. (William Henry), 1811 -1866 (Reeve and Benham, 1846)

Phycologia mediterranea - Ardissone, Francesco, 1837 -1910 (Antica tip. ferri di Maj e Malnati, 1883)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1940)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1937)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1948)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1953)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1961)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1966)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1969)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1972)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1973)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1978)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1979)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1980)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1983)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 2013)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 2014)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 2016)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 2020)

The Phytologist: a botanical journal - Irvine, Alexander, 1793 -1873 (William Pamplin, 1857)

The Phytologist: a popular botanical miscellany - Newman, Edward, 1801 -1876 (John van Voorst, 1841)

The Phytologist: a popular botanical miscellany - Newman, Edward, 1801 -1876 (John van Voorst, 1850)

The pictorial flora; or, British botany delineated, in 1500 lithographic drawings of all the species of flowering plants indigenous to Great Britain; illustrating the descriptive works on English botany by Sir J.E. Smith, Lindley, Hooker, Withering, and other authors - Jackson, Mary Ann (Longman, Orme, Brown, Green, and Longmans, 1840)

The pictorial museum of animated nature ... - Knight, Charles, 1791 -1873 (C. Knight, 1844)

The pictorial museum of animated nature - Knight, Charles, 1791 -1873 (C. Cox, 1844)

Pierre Pena et Mathias de Lobel - Legré, Ludovic, 1838 -1904 (H. Aubertin & G. Rolle, 1899)

The pinetum: being a synopsis of all the coniferous plants at present known, with descriptins, history and synonyms, and a comprehensive systematic index - Gordon, George, 1806 -1879 (H. G. Bohn, 1875)

The pinetum: being a synopsis of all the coniferous plants at present known, with descriptions, history and synonyms, and a comprehensive systematic index - Gordon, George, 1806 -1879 (H.G. Bohn [etc.], 1880)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1929)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1968)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1969)

Plant life of Alabama. An account of the distribution, modes of association, and adaptations of the flora of Alabama, together with a systematic catalogue of the plants growing in the state. Prepared in cooperationwith the Geological Survey of Alabama - Mohr, Charles (Charles Theodore), 1824 -1901 (Govt. Print. Off, 1901)

Plantae rariores quas in itinere per oras Jonii ac Adriatici Maris et per regiones Samnii ac Aprutii - Gussone, Giovanni, 1787 -1866 (Ex Regia Typographia, 1826)

The planting guide - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Malmo & Co, 1931)

Plants in Danger: what do we know? (1986)

Les poissons : synonymie–description–mœurs–frai–pêche–iconographie, des espèces composant plus particulièrement la faune française - Boulart, R. (Raoul), 1849 -1901 (J. Rothschild, 1877)

Popular conchology, or, The shell cabinet arranged according to the modern system : with a detailed account of the animals, and a complete descriptive list of the families and genera of recent and fossil shells - Catlow, Agnes, 1807? -1889 (Longman, Brown, Green, and Longmans, 1854)

Popular conchology : or, The shell cabinet arranged: being an introduction to the modern system of conchology, with a sketch of the natural history of the animals, an account of the formation of the shells, and a complete descriptive list of the families and genera - Catlow, Agnes, 1807? -1889 (Longman, Brown, Green, and Longmans, 1843)

The popular encyclopedia; being a general dictionary of arts, sciences, literature, biography, history, and political economy, reprinted from the American edition of the "Conversations lexicon" ... with dissertations on the rise and progress of literature (Blackie, 1900)

Popular garden botany; containing a familiar and scientific description of most of the hardy and half-hardy plants introduced into the flower garden - Catlow, Agnes, 1807? -1889 (L. Reeve, 1855)

Popular geography of plants; or, A botanical excursion round the world - Daubeny, Charles, 1795 -1867 (L. Reeve, 1855)

Popular geography of plants; or, A botanical excursion round the world - Daubeny, Charles, 1795 -1867 (1855)

Popular names of flowers, fruits, &c., as used in the county of Somerset and the adjacent parts of Devon, Dorset and Wilts - Macmillan, Alexander Stuart. (Western Gazette, 1922)

Popular Science Review (1865)

Popular Science Review (1867)

Popular Science Review (1874)

Population ecology of rodents in the semiarid shrublands of Chile - Fulk, George W. (The Museum, Texas Tech University, 1975)

Portugal nos mares; ensaios de critica, historia e geographia - Martins, Francisco De Assis De Oliveira. (Parceria A. M. Pereira, 1924)

Practical hints on planting ornamental trees, with particular reference to coniferae... - Noble, Charles, Nurseryman, (Bradbury and Evans, 1852)

Price catalogue : season 1926-1927 - Roeding, George Christian, 1868 -1928 (George C. Roeding, 1926)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Claremont Nurseries, 1914)

Price list, No. 29 : season fall 1929, spring 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.B. Pilkington, 1929)

Price list of Eastern Nurseries, Inc. : spring, 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Eastern Nurseries, Inc, 1930)

Price list of fruit and ornamental trees, small fruits, evergreens, roses, etc., of the California Nursery Co - California Nursery Co. (The Nursery, 1881)

Price list of the Ashby nursery : fruit trees, ornamental trees, shrubs, roses, palms, bedding and border plants, bulbs, vines, house plants, seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.H. Wolters, 1909)

Price list. season fall 1922, spring 1923 No. 12A - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.B. Pilkington, 1922)

Price list. season fall 1923, spring 1924 No. 23 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.B. Pilkington, 1923)

Price list. season fall 1924, spring 1925 No. 24 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.B. Pilkington, 1924)

Price list. season fall 1925, spring 1926 No. 25 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.B. Pilkington, 1925)

Price list. season fall 1926, spring 1927 No. 26 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.B. Pilkington, 1926)

Price list. season fall 1927, spring 1928 No. 27 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.B. Pilkington, 1927)

Price list. season fall 1928, spring 1929 No. 28 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.B. Pilkington, 1928)

A priced schedule of economic-ornamental plants : citrus and deciduous fruit trees, avenue and ornamental trees, choice garden shrubs and vines, palms, new and standard roses including many new and rare varieties - Roeding, George Christian, 1868 -1928 (Roeding & Wood Nursery Co, 1915)

Pricelist for the season 1955-56 : wholesale only, 73 years old - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gray Nurseries, 1955)

Principles of geology : being an attempt to explain the former changes of the earth's surface, by reference to causes now in operation - Deshayes, G. P. (Gérard Paul), 1795 -1875 (John Murray, 1833)

Principles of geology; being an attempt to explain the former changes of the earth's surface, by reference to causes now in operation - Deshayes, G. P. (Gérard Paul), 1795 -1875 (J. Murray, 1830)

Principles of geology : or the modern changes of the earth and its inhabitants considered as illustrative of geology - Lyell, Charles, Sir, 1797 -1875 (John Murray, 1867)

Proboscidea : a monograph of the discovery, evolution, migration and extinction of the mastodonts and elephants of the world - Osborn, Henry Fairfield, 1857 -1935 (Published on the J. Pierpont Morgan Fund by the trustees of the American Museum of Natural History, 1936)

Proceedings - Dorset Natural History; Archaeological Society.

Proceedings and transactions of the Natural History Society of Glasgow - Natural History Society of Glasgow. (The Society, 1886)

Proceedings and transactions of the Royal Society of Canada. Délibérations et mémoires de la Société royale du Canada - Royal Society of Canada. (Société royale du Canada, 1890)

Proceedings of the 6th International Conference on Coelenterate Biology : the Leeuwenhorst, Noordwijkerhout, the Netherlands, 16-21 July 1995 - Ofwegen, L. P. van (Leendert P.), 1953 - (Nationaal Natuurhistorisch Museum, 1997)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1862)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1872)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1873)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1876)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1882)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1894)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1913)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1841)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1917)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1970)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1975)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1986)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1987)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1988)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1998)

Proceedings of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1904)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 2001)

Proceedings of the Dublin University Zoological and Botanical Association - Dublin University. Zoological; Botanical Association.

Proceedings of the Elliott Society of Natural History of Charleston, South-Carolina - Elliott Society of Natural History (Russell & Jones, 1853)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1982)

Proceedings of the Linnean Society of New South Wales - Linnean Society of New South Wales. (Linnean Society of New South Wales, 1939)

Proceedings of the Literary and Philosophical Society of Liverpool - Literary; Philosophical Society of Liverpool. (1854)

Proceedings of the Literary and Philosophical Society of Manchester - Literary; Philosophical Society of Manchester. (The Society, 1877)

Proceedings of the Liverpool Biological Society - Liverpool Biological Society. (The Society, 1887)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1893)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1905)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1909)

Proceedings of the Natural history society of Dublin for the session ... - Natural History Society of Dublin. (Printed for the Society, 1846)

Proceedings of the Natural history society of Dublin for the session ... - Natural History Society of Dublin. (Printed for the Society, 1856)

Proceedings of the Natural history society of Dublin for the session ... - Natural History Society of Dublin. (Printed for the Society, 1859)

Proceedings of the Natural history society of Dublin for the session ... - Natural History Society of Dublin. (Printed for the Society, 1866)

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1863)

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1896)

Proceedings of the Royal Physical Society of Edinburgh - Royal Physical Society of Edinburgh. (The Society, 1904)

Proceedings of the Royal Society of London - Royal Society (Great Britain) (The Society, 1878)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1880)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1887)