Encyclopedias, Almanacs, Transcripts, and Maps
- Antipsychotic Drugs
- Antipsychotic drugs
- Antiseptic and Aseptic Techniques Are Developed
- Antiserum and Antitoxin
- Antlions, Lacewings, and Relatives: Neuroptera
- Antoine Baumé
- Antoine de Bruni Charts the Tasmanian Coast
- Antoine François de Fourcroy
- Antoine Raymond Joseph de Bruni d'Entrecasteaux
- Antoine-Laurent de Jussieu
- Anton de Alaminos
- Anton Dohrn
- Anton Friedrich Büsching
- Anton Koberger
- Anton Maria Schyrlaeus de Rheita
- Antonio Benivieni
- Antonio Caetano de Abreu Freire Egas Moniz
- Antonio Fior
- Antonio Luigi Gaudenzio Guiseppe Cremona
- Antonio Neri