Reynolds, James E. F.
The Pharmaceutical Press, 1993
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Reynolds, James E. F.
The Pharmaceutical Press, 1989
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Her Majesty's Stationery Office, 1973
Buku Referensi
KAT International Marketing Service, 1972
Buku Referensi
Sliosberg, A.
Elsevier, 1968
Buku Referensi