The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1898)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1913)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1917)

Our birds in their haunts : a popular treatise on the birds of Eastern North America - Langille, J. H. (S. E. Cassino, 1884)

Our birds in their haunts a popular treatise on the birds of eastern North America - Langille, J. H. (James Hibbert), 1841 -1923 (S.E. Cassino, 1884)

Our common birds and how to know them - Grant, John Beveridge (C. Scribner, 1895)

Our common birds and how to know them - Grant, John Beveridge (C. Scribner's sons, 1891)

Our domestic animals in health and disease - Gamgee, John, 1831 -1894 (Maclachlan & Stewart, 1871)

Our living resources : a report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems - United States. National Biological Service. (U.S. Dept. of the Interior, National Biological Service, 1995)

Our living world; an artistic edition of the Rev. J. G. Wood's Natural history of animate creation - Wood, J. G. (John George), 1827 -1889 (S. Hess, 1885)

Our native birds of song and beauty, being a complete history of all the songbirds, flycatchers, hummingbirds, swifts, goatsuckers, woodpeckers, kingfishers, trogons, cuckoos, and parrots, of North America - Nehrling, Henry, 1853 -1929 (G. Brumder, 1893)

Our northern and eastern birds : containing descriptions of the birds of the northern and eastern states and British provinces; together with a history of their habits, times of arrival and departure, their distribution, food, song, time of breeding, and a careful and accurate description of their nests and eggs - Samuels, Edward A. (Edward Augustus), 1836 -1908 (R. Worthington, 1883)

Our northern and eastern birds. Containing descriptions of the birds of the northern and eastern states and British provinces; together with a history of their habits, times of arrival and departure, their distribution, food, song, time of breeding, and a careful and accurate description of their nests and eggs ... - Samuels, Edward A. (Edward Augustus), 1836 -1908 (R. Worthington, 1883)

Our northern and eastern birds containing descriptions of the birds of the northern and eastern states and British provinces, together with a history of their habits, times of arrival and departure, their distribution, food, song, time of breeding, and a careful and accurate description of their nests and eggs ; with illustrations of many species of the birds and accurate figures of their eggs - Samuels, Edward A. (Edward Augustus), 1836 -1908 (R. Worthington, 1883)

Our search for a wilderness; an account of two ornithological expeditions to Venezuela and to British Guiana - Beebe, William, 1877 -1962 (Constable, 1910)

Outlines of American ornithology : part 1, Land birds - Baird, Spencer Fullerton, 1823 -1887 (Little, Brown, 1873)

Outlines of clinical diagnostics of the internal diseases of domestic animals - Fischer, Paul, 1906 - (Eger, 1909)

Outlines of clinical diagnostics of the internal diseases of domestic animals - Malkmus, Bernhard, 1859 -1925 (A. Eger, 1908)

Outlines of clinical diagnostics of the internal diseases of domestic animals - Malkmus, Bernhard, 1859 -1925 (A. Eger, 1901)

Outlines of comparative physiology : touching the structure and development of the races of animals, living and extinct, for the use of schools and colleges - Agassiz, Louis, 1807 -1873 (Bell & Daldy, 1867)

Outlines of comparative physiology : touching the structure and development of the races of animals, living and extinct : for the use of schools and colleges - Agassiz, Louis, 1807 -1873 (H.G. Bohn, 1851)

Outlines of comparative physiology touching the structure and development of the races of animals, living and extinct : for the use of schools and colleges - Agassiz, Louis, 1807 -1873 (Bell & Daldy, 1870)

Outlines of general zoology - Baird, Spencer Fullerton, 1823 -1887 (Rudolph Garrigue, 1851)

Outlines of the veterinary art, or, A treatise on the anatomy, physiology, and curative treatment of the diseases of the horse ; and subordinately, of those of neat cattle and sheep illustrated by surgical and anatomical plates - University of Glasgow. Library. (Longman, Orme, 1841)

The outlines of the veterinary art, or, The principles of medicine as applied to the structure, functions, and oeconomy, of the horse, and to a more scientific and successful manner of treating his various diseases : comprehending, also, a concise view of those of neat cattle and sheep - University of Glasgow. Library. (1816)

The outlines of the veterinary art; or, The principles of medicine : as applied to the structure, functions, and economy, of the horse, and to more scientific and successful manner of treating his various diseases : comprehending, also, a concise view of those of neat cattle and sheep... - Blaine, Delabere P. (Delabere Pritchett), 1770 -1845 (Printed for Boosey & Sons, 1826)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1909)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1902)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1904)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1913)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1914)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1919)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1917)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1921)

The Pacific tree & vine (Henry A. Brainard, 1884)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1918)

Pamphlets on forestry in West Virginia (1900)

Die Papageien - Finsch, O. (Otto), 1839 -1917 (Brill, 1867)

Papéis avulsos do Departamento de Zoologia - São Paulo Departamento de Zoologia (A Secretaria, 1943)

Papéis avulsos do Departamento de Zoologia - São Paulo Departamento de Zoologia (A Secretaria, 1952)

Papers and communications read before the Natural History Society of British Columbia - Natural History Society of British Columbia. (Natural History Society of British Columbia?], 1891)

The parasites of man, and the diseases which proceed from them. A text-book for students and practitioners - Leuckart, Rudolf, 1823 -1898 (Y.J. Pentland, 1886)

The parasites of man, and the diseases which proceed from them : a text-book for students and practitioners - Leuckart, Rudolf, 1823 -1898 (Young J. Pentland, 1886)

The parasites of man, and the diseases which proceed from them; a textbook for students and practitioners - Leuckart, Rudolf, 1823 -1898 (Pentland, 1886)

Parasitology - British Society for Parasitology. (Cambridge University Press, 1909)

Parasitology (Cambridge University Press, 1922)

Part I. Palæontology - Hall, James, 1811 -1898 (Govt. print. off, 1877)

Pássaros do Brasil (vida e costumes) - Santos, Eurico (F. Briguiet & Cia, 1940)

Pasteur; the history of a mind - Duclaux, Emile, 1840 -1904 (W.B. Saunders company, 1920)

Pasteur; the history of a mind - Duclaux, Emile, 1840 -1904 (W. B. Saunders Co, 1920)

Pasteur : the history of a mind - Duclaux, Emile, 1840 -1904 (W.B. Saunders, 1920)

Pathological plant anatomy - Küster, E. (Ernst), 1874 -1953 (1913)

Pathology and bacteriology for dental students - McConnell, Guthrie. (W. B. Saunders company, 1915)

The pathology and differential diagnosis of infectious diseases of animals - Moore, Veranus A. (Veranus Alva), 1859 -1931 (Taylor & Carpenter, 1908)

Pathology and therapeutics of the domestic animals - Fröhner, Eugen, 1858 -1940 (W. L. Zuill, 1895)

Patologia vegetale. Fanerogame parassite, mixomiceti, bacterii, ifomiceti od eumiceti (funghi) - Voglino, Pietro. (Unione tipografico-editrice [Gia ditta Pomba e c], 1905)

P.D. Skaar's Montana bird distribution - Skaar, Palmer David. (Montana Natural Heritage Program, 2003)

Pennsylvania bird life; a manual of the birds of Pennsylvania; treating especially of their food, from examinations of several thousand stomachs, made during all seasons of the year, with descriptions of the birds, their nests, eggs and habits - Warren, Benjamin Harry, 1858 -1926 (Penn'a., Pub by the author, 1892)

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

Pennsylvania farm journal - Darlington, J. L. (A.M. Spangler, 1853)

The people's horse, cattle, sheep, and swine doctor : containing ... concise descriptions of the diseases of the respective animals, with the exact doses of medicine for each - Clarke, William H. (M.T. Richardson Co, 1892)

Per una classificazione elementare dei Passercei, Rampicanti e Trogoni, raccolta e ordinamento di alcuni caratteri - Cavazza, Filippo. (Tipografia di Paolo Neri, 1909)

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