All Authors
- Assézat, Jules 1832-1876
- Assing, Ludmilla 1821-1880
- Assmuss, Eduard Philibert 1838-1882
- Associação Comercial do Amazonas -
- Association for Promoting the Discovery of the Interior Parts of Africa -
- Association of Official Agricultural Chemists (U.S.) -
- Association of the Miraculous Medal -
- Assollant, Alfred 1827-1886
- Astala, Onni -
- Astarita, Rafael Jerard Norman 1912-1994
- Astell, Mary 1666-1731
- Astley, Hubert D. 1860-1925
- Aston, W. G. (William George) 1841-1911
- Astor, John Jacob 1864-1912
- Astor, Nancy Witcher Langhorne Astor, Viscountess 1879-1964
- Astronomical Society of the Pacific -
- Asunta, Heikki 1904-1959
- Aśvaghosha -
- Atalaya González, Enrique 1851-1914
- Athanasius, Saint, Patriarch of Alexandria -373
- Athanas, Verne 1917-1962
- Athenaeus, of Naucratis -
- Atherton, Gertrude Franklin Horn 1857-1948
- Atherton, William 1793-1863
- Atherton, William H. (William Henry) 1867-1950
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