| a cappella ... Abd al-Aziz |
| Abd al-Ghani ... Abernathy, Ralph David |
| aberration ... Abstraction-Creation |
| Absurd, Theatre of the ... accipiter |
| accismus ... aconite |
| Acontius ... Adam Of Bremen |
| Adam's Bridge ... Adena culture |
| Adenauer, Konrad ... Adrian II |
| Adrian III, Saint ... aerodynamics |
| Aeroflot ... African Trade Union Unity, Organization of |
| African Union ... agglutinin |
| aggregate ... Agung, Abulfatah |
| Agung, Mount ... aikido |
| aileron ... Akan |
| Akan languages ... Alaman, Lucas |
| Alameda ... Albert |
| Albert ... alchemy |
| Alchevsk ... Ales |
| Alesia ... Alexis, Willibald |
| Alexius I Comnenus ... Alice Springs |
| alicyclic compound ... Allen, Sir Hugh |
| Allen, Sir James ... almoner |
| almonry school ... Altria Group |
| altruism ... Amatitlan, Lake |
| Amazon ... American Civil War |
| American Colonization Society ... Amiens Cathedral |
| Amiens, Treaty of ... Amphitrite |
| Amphitryon ... Anahuac |
| Anai Peak ... Ancillon, Charles |
| Ancillon, Johann Peter Friedrich ... Andreani, Andrea |
| Andreanof Islands ... Angell, James Rowland |
| Angell, Sir Norman ... Aniene River |
| Aniliidae ... anomalous water |
| anomalure ... anthracnose |
| anthracosis ... antipasto |
| Antipater ... ANZUS Pact |
| Aoba ... Apologist |
| apology ... Apure River |
| Apurimac ... Aral Sea |
| Arales ... archduke |
| Archean eon ... Arequipa |
| Ares ... Arif, 'Abd al-Salam |
| Arigboge ... Armada |
| armadillo ... Arnold Arboretum of Harvard University |
| Arnold of Brescia ... Arsuf, Battle of |
| art ... artiodactyl |
| Artis Zoological Garden ... Aschersleben |
| Aschoff, Karl Albert Ludwig ... Asiatic black bear |
| Asiatic low ... Associated Press |
| Associated Universities, Inc. ... Asyut |
| AT&T; Corporation ... Atlantic Coast Conference |
| Atlantic Intracoastal Waterway ... Attiki |
| Attila ... Augustus |
| Augustus ... Australian Patriotic Association |
| Australian region ... Avenarius, Richard |
| avens ... Ayacucho, Battle of |
| Ayala, Francisco ... |
|
|
