Aramaki Seigo
Arin M. Louis
Arkenbout Gerardus J.
Asami Hazime
Asano Motohiko
Ashton Paul J.
Aslam Muhammed Javed
Asymptote Limited
Ateliers Belges Reunis
Atoiants Vladimir Sergeevich
Audet Denis R.
August Thyssen-Hutte AG
Aukofer John E.
Ault Eldon F.
Aussieker Klaus
AutoChem Instrument Aktiebolag
Autoresearch Laboratories, Inc.
Averin Vitaly Mikhailovich
Ax Wolfgang
Ayusawa Masatake