has proven an invaluable and unique aid for all those involved with drug production and analysis, including pharmacists, chemical and pharmaceutical researchers and technicians, drug importers and exporters, governmental chemical control agencies, and health authorities. From the reviews of the German Edition: "The reviewer would like to recommend this excellent book to all chromatographers, as he considers it highly relevant to the solution of numerous problems. Its main purpose is the demonstration of thin-layer chromatograms of the usual commercial drugs as an aid in testing for identity and purity. ... 165 colour plates, each showing 6 chromatograms and all of superb quality photographs ..." (Journal of Chromatography)weiterlesen