American Cyanamid
Atochem
Becton, Dickinson & Co.
Bock Pharmaca
Bristol-Myers Squibb
Boehringer Ingelheim Ltd.
Cobe Laboratories
Dupont-ISD
Englehard Corp
Glaxo Wellcome
ICI America
Johnson & Johnson
McNeil Pharmaceuticals
Merck & Company
Monsanto
Norton Lilly
Pennwalt
Pfizer Chemical
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Reichhold Chemicals
Roche Pharmaceuticals
Rohm & Haas
Rorer Group
Schering-Plough
Sigma Chemical
Smith Kline Beecham
Solvay Pharmaceuticals
Stauffer Chemicals
Sterling Drug Company
Tri-Chem Inc.
U.S.I. Chemicals
Union Carbide
Valley Lab
Warner Lambert
Witco Corporation
Wyeth-Ayerst
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