Pharmacology and Toxicology 51 Biochemistry-- Biology 44 Biochemistry 41 Microbiology 41 Lecture Notes in Pure and Applied Mathematics 38 Chemistry 32 Religion 22 Pathology 20 Plant Protection 17 Chromatographic Analysis 16 Statistics 16 Engineering 15 Electrochemistry 14 Novel 14 Organic chemistry 14 Literature 12 Mathematics 12 Research 12 History 11 Polymers 11 Arthropod-- Invertebrate Zoology 10 Economics 10 Physiology 10 Genetics 9 History and criticism 9 Homescience 9 Management 9 Polymerization 9 Public Health 9 Rings, integral domains, ideals, Modules, Radical theory-- Algebra-- Mathematics 9