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Anrep-Elmpt, Reinhold 1834-1888
Anton, R. -
Apollonius, Rhodius -
Appleton, R. B. (Reginald Bainbridge) 1886-1938
Applin, R. V. K. (Reginald Vincent Kempenfeldt) 1869-1957
Arber, Agnes Robertson 1879-1960
Archer, Richard -1883
Archibald, Raymond Clare 1875-1955
Arcos, René 1880-1959
Argentina -
Argentina. Ministerio de Agricultura -
Argilagos, Rafael G. (Rafael Graciano) 1885-1967
Arkell, Reginald 1882-1959
Armitage, Robert B. -
Armour, Rebecca Agatha 1845-1891
Arnault, Robert -
Arnold, Reginald Harvey -
Arnold, Robert -
Arnot, Robert 1860-
Arrighi, Cletto 1830-1906
Arrowsmith, Robert 1860-1928
Arr, Stephen 1921-2012
Arthur, Frances Browne -1920
Arthur, Richard 1865-1932
Arthur, Robert 1909-1969
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