Arboretum bulletin of the associates - University of Pennsylvania. Morris Arboretum. (The Morris Arboretum of the University of Pennylvania, 1937)

Archiv für Naturgeschichte. Abteilung B (Nicolai, 1913)

Archiv für Naturgeschichte. Abteilung B (Nicolai, 1914)

Archiv für Naturgeschichte. Abteilung B (Nicolai, 1915)

Archiv für Naturgeschichte. Abteilung B (Nicolai, 1916)

Archiv für Naturgeschichte (Nicolai, 1871)

Archiv für Naturgeschichte (Nicolai, 1873)

Archiv für Naturgeschichte (Nicolai, 1877)

Archiv für Naturgeschichte (Nicolai, 1878)

Archiv für Naturgeschichte (Nicolai, 1894)

Archiv für Naturgeschichte (Nicolai, 1897)

Archiv für Naturgeschichte (Nicolai, 1907)

Archiv für Naturgeschichte (Nicolai, 1908)

Archiv für Naturgeschichte (Nicolai, 1909)

Archiv für Naturgeschichte (Nicolai, 1910)

Archiv für Naturgeschichte (Nicolai, 1911)

The Arctic prairies : a canoe-journey of 2,000 miles in search of the caribou : being the account of a voyage to the region north of Aylmer lake - Seton, Ernest Thompson, 1860 -1946 (Constable, 1912)

The Arctic prairies, a canoe-journey of 2,000 miles in search of the caribou; being the account of a voyage to the region north of Aylmer Lake - Seton, Ernest Thompson, 1860 -1946 (C. Scribner's Sons, 1911)

The Arctic prairies : a canoe-journey of 2,000 miles in search of the caribou; being the account of a voyage to the region north of Aylmer Lake - Seton, Ernest Thompson, 1860 -1946 (W. Briggs, 1911)

The Arctic prairies; a canoe-journey of 2,000 miles in search of the caribou; being the account of a voyage to the region north of Aylmer Lake - Seton, Ernest Thompson, 1860 -1946 (C. Scribner's sons, 1911)

The ASB bulletin - Association of Southeastern Biologists. (Association of Southeastern Biologists, 1970)

The ASB bulletin - Association of Southeastern Biologists. (Association of Southeastern Biologists, 1973)

The ASB bulletin - Association of Southeastern Biologists. (Association of Southeastern Biologists, 1976)

Atlante ornitologico : uccelli europei : con notizie d'indole generale e particolare - Arrigoni degli Oddi, Ettore, 1867 -1942 (U. Hoepli, 1902)

Audubon the naturalist; a history of his life and time - Herrick, Francis Hobart, 1858 -1940 (D. Appleton, 1917)

Audubon the naturalist : a history of his life and time - Herrick, Francis Hobart, 1858 -1940 (D. Appleton and company, 1917)

Audubon, the naturalist; a history of his life and time - Herrick, Francis Hobart, 1858 -1940 (Appleton, 1917)

Audubon the naturalist; a history of his life and time - Herrick, Francis Hobart, 1858 -1940 (D. Appleton-Century Company, incorporated, 1938)

Audubon the naturalist; a history of his life and time - Herrick, Francis Hobart, 1858 -1940 (D. Appleton and Company, 1917)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1884)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1885)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1886)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1887)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1888)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1889)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1890)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1892)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1893)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1894)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1895)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1896)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1897)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1898)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1899)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1900)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1876)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1901)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1902)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1903)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1904)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1905)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1906)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1907)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1908)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1909)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1910)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1915)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1911)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1912)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1913)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1914)