Institution
- American University in Cairo1
- American University of Beirut1
- American Vacuum Society1
- American Viscose Corporation1
- Amex Corporation1
- Amgen, Inc. 1
- Amherst College3
- Amoco Corporation1
- Ampex Corporation1
- Analog Technology Corporation1
- Analytical Consultants, Inc.1
- Ankara Üniversitesi1
- Apple Computer, Inc.1
- Applied Biosciences International, Inc.1
- Applied Biosystems1
- Applied Biosystems/PerSeptive Biosystems1
- Archaeological Conservancy (U.S.)2
- Arctic Research Consortium of the United States1
- Argonne National Laboratory4
- Arizona State University2