Drugs 146 Drug abuse 31 Drug Discovery 28 Drug development 26 Pharmacology 26 Drug Design 25 Medicine 22 Pesticides and Drugs; Control, (New March 2000) 21 methods 21 Pharmaceutical chemistry 19 Drug therapy 17 Pharmaceutical Preparations 17 Biological Control 14 Drugs (Materia medica)-- Pharmacology 14 Natural enemies 14 Pharmacokinetics 14 Biological control 13 Drug delivery systems 13 Plant Pests, (New March 2000) 13 Research 13 Biotechnology 12 Chemical control 12 Design 12 Drug design 12 Man 12 Plant pests 12 Pest control 11 Pharmacognosy 11 Pharmacology and Toxicology 11 Drug resistance in microorganisms 10