Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1926)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1929)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1930)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1934)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1935)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1950)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1955)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1957)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1959)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1960)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1962)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1964)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1966)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1968)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1973)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1974)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1975)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1977)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1978)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1981)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1982)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1984)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1986)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1990)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 1992)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 2000)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 2006)

Aquila - Magyar ornithologiai központ. (A Magyar Ornithologiai Knt Kiadva, 2010)

Archiv für Naturgeschichte. Abteilung B (Nicolai, 1912)

Archiv für Naturgeschichte. Abteilung B (Nicolai, 1914)

Archiv für Naturgeschichte. Abteilung B (Nicolai, 1918)

Archiv für Naturgeschichte (Nicolai, 1887)

Archiv für Naturgeschichte (Nicolai, 1894)

Archiv für Naturgeschichte (Nicolai, 1897)

Archiv für Naturgeschichte (Nicolai, 1901)

Archiv für Naturgeschichte (Nicolai, 1904)

Archiv für Naturgeschichte (Nicolai, 1908)

An Arctic ecosystem : the coastal tundra at Barrow, Alaska - Brown, Jerry, 1936 - (Dowden, Hutchinson & Ross, 1980)

Ardea - Nederlandsche Ornithologische Vereeniging. (Nederlandse Ornithlogische Unie, etc, 1912)

Ardea - Nederlandsche Ornithologische Vereeniging. (Nederlandse Ornithlogische Unie, etc, 1918)

Ardea - Nederlandsche Ornithologische Vereeniging. (Nederlandse Ornithlogische Unie, etc, 1921)

Ardea - Nederlandsche Ornithologische Vereeniging. (Nederlandse Ornithlogische Unie, etc, 1922)

Arnoldia - Arnold Arboretum. (Arnold Arboretum, Harvard University, 1971)

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

Atlas of zoogeography; a series of maps illustrating the distribution of over seven hundred families, genera, and species of existing animals - Clarke, William Eagle, 1853 -1938 (Pub. at the Edinburg Geographical Institute, by J. Bartholomew & Co, 1911)

Atoll research bulletin - Smithsonian Institution ([Smithsonian Press, 1972)

Atti del Reale Istituto veneto di scienze, lettere ed arti - Regio Istituto veneto di scienze, lettere ed arti (Venice, Italy) (Il Istituto, 1858)

Atti della Società dei naturalisti e matematici di Modena - Società dei naturalisti e matematici di Modena. (Società Tipografica Editrice Modenese - Mucchi, 1888)

Atti della Società dei naturalisti e matematici di Modena - Società dei naturalisti e matematici di Modena. (Società Tipografica Editrice Modenese - Mucchi, 1889)

Atti della Società italiana di scienze naturali - Società italiana di scienze naturali. (Coi tipi di G. Bernardoni, 1892)

Atti della Società italiana di scienze naturali e del Museo civico di storia naturale di Milano - Museo civico di storia naturale di Milano. (La Società, 1896)

Atti della Società italiana di scienze naturali e del Museo civico di storia naturale di Milano - Museo civico di storia naturale di Milano. (La Società, 1899)

Audubon and his journals - Coues, Elliott, 1842 -1899 (C. Scribner, 1897)

Audubon and his journals - Coues, Elliott, 1842 -1899 (Nimmo, 1898)

Audubon and his journals - Coues, Elliott, 1842 -1899 (Scribner's Sons, 1897)

Audubon and his journals - Coues, Elliott, 1842 -1899 (C. Scribner's Sons, 1899)

Audubon and his journals - Coues, Elliott, 1842 -1899 (J.C. Nimmo, 1898)

The Audubon magazine - National Audubon Society. (Forest and Stream Publishing Co.], 1888)

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, 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, 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, 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)