Die Pflanzenwelt Afrikas, insbesondere seiner tropischen Gebiete : Grundzge der Pflanzenverbreitung im Afrika und die Charakterpflanzen Afrikas - Engler, Adolf, 1844 -1930 (W. Engelman, 1910)

Die Pflanzenwelt Ost-Afrikas und der Nachbargebiete - Engler, Adolf, 1844 -1930 (D. Reimer, 1895)

Die Pflanzenwelt vor dem Erscheinen des Menschen - Vogt, Karl Christoph, 1817 -1895 (Braunschweig : F. Vieweg u. Sohn, 1881)

The phantom bouquet : a popular treatise on the art of skeletonizing leaves and seed-vessels and adapting them to embellish the home of taste - Parrish, Edward, 1822 -1872 (J.B. Lippincott, 1864)

Pharmaceutical journal and transactions - Pharmaceutical Society of Great Britain (J. & A. Churchill, 1871)

Pharmaceutical journal and transactions - Pharmaceutical Society of Great Britain. (J. & A. Churchill, 1878)

Pharmaceutical journal and transactions - Pharmaceutical Society of Great Britain. (J. & A. Churchill, 1879)

Pharmaceutical journal and transactions - Pharmaceutical Society of Great Britain. (J. & A. Churchill, 1876)

Pharmacographia indica a history of the principal drugs of vegetable origin, met with in British India - Dymock, William, 1834 -1892 (K. Paul, Trench, Trübner, 1890)

Philadelphia flower & garden show - Pennsylvania Horticultural Society. (The Society, 1977)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1906)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1907)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1909)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1910)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1912)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1914)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1915)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1916)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1917)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1921)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1922)

The Philosophical magazine and journal : comprehending various branches of science, the liberal and fine arts, agriculture, manufactures, and commerce (R. Taylor, 1823)

The Philosophical transactions of the Royal society of London, from their commencement in 1665, in the year 1800 - Royal Society (Great Britain) (Printed by and for C. and R. Baldwin, 1809)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1759)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1761)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1773)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1862)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1879)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1662)

Phoenix's plant catalogue including plant novelties, greenhouse & bedding plants in eight classes, each alphabetically arranged : 1. New plants, 2. Hothouse plants and bedders, 3. Greenhouse and bedding plants, 4. Leading plants with lists, 5. Vase and basket plants, 6. Hardy herbaceous plants, 7. Fruit and vegetable plants, 8. summer flowering bulbs; bouquets, wreaths and floral decorations to order - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bloomington Nursey, published by F.K. Phoenix, proprietor, 1875)

PHS news - Pennsylvania Horticultural Society. (The Society, 1986)

The physical geology and geography of Great Britain : a manual of British geology - Woodward, Horace B. (Horace Bolingbroke), 1848 -1914 (E. Stanford, 1878)

Die Physiologie des Geruchs - Junker von Langegg, A., (W. Engelmann, 1895)

Phytochemie - Rochleder, Friedrich, 1819 -1874 (W. Engelmann, 1854)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1971)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1977)

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, 1982)

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, 1984)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1987)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1995)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1998)

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

The Phytologist: a botanical journal - Irvine, Alexander, 1793 -1873 (William Pamplin, 1862)

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

Le piante vascolari raccolte dal Rev. P.C. Silvestri nell'Hu-peh, durante gli anni 1904-1907 (e negli anni 1909, 1910) - Silvestri, Cipriano. (Pellas, 1911)

The pictorial gallery of English race horses : containing portraits of all the winners of the Derby, Oaks and St. Leger Stakes, during the last twenty years ; and a history of the principal operations of the turf - Cooper, Abraham, 1787 -1868 (Henry G. Bohn, 1850)

Pictorial practical bulb growing; a concise guide to the culture of all the most important bulbous, tuberous, and allied plants - Wright, Horace J. (Horace John), 1868 -1925 (Cassell and company, limited, 1903)

Pigford Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pigford Nurseries, 1933)

Pigford Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pigford Nurseries, 1932)

Pigford Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pigford Nurseries, 1934)

Pigford Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pigford Nurseries, 1936)

Pigford Nurseries [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pigford Nurseries, 1931)

Pigford Nurseries, Lumberton, Mississippi - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pigford Nurseries, 1929)

Pigford Nurseries : Lumberton, Mississippi - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pigford Nurseries, 1937)

Pike's "can't-be-beat" guaranteed seeds, bulbs, plants, 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (S.W. Pike, Seedsman, Inc, 1936)

Pike's garden annual 1924 : seeds, bulbs, plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (S.W. Pike, 1924)

Pike's garden annual : plants, bulbs, seeds and nursery stock - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (S.W. Pike, 1929)

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)

Pinetum narcissi special circular no. 2 : wholesale price list, January 1, 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pinetum Gardens, 1925)

Pioneer Nursery of Monrovia : 1876-1927 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pioneer Nursery of Monrovia, 1927)

Pioneer Nursery of Monrovia : [catalog] 1876-1925, forty-nine years experience - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pioneer Nursery of Monrovia, 1925)

P.J. Berckmans Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1910)

P.J. Berckmans Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1912)

P.J. Berckmans Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1911)

P.J. Berckmans Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1916)

P.J. Berckmans Co. : 1904 1905 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1904)

P.J. Berckmans Co. : 1905 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1903)

P.J. Berckmans Co. : 1905 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1905)

P.J. Berckmans Co., Inc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1915)

P.J. Berckmans Co., Incorporated - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1914)

P.J. Berckmans Co. Incorporated - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1917)

P.J. Berckmans Co., Incorporated - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1913)

P.J. Berckmans Co. Incorporated - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1907)

P.J. Berckmans Co., Incorporated [catalog] 1906-1907 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1906)