Diseases 45 Agriculture 37 Congresses 27 Economic aspects 25 Dogs 14 Handbooks, manuals, etc 13 Veterinary medicine 13 more ... Swine 12 Addresses, essays, lectures 11 Agriculture and state 10 Cats 10 Veterinary pathology 9 Behavior 8 Communicable diseases in animals 8 Diagnosis 7 Farm produce 7 Fishes 7 Poultry 7 Practice 7 Wildlife diseases 7 Mammals 6 Marketing 6 Nutrition 6 Research 6 Statistics  6 Birds 5 Food 5 Freshwater fishes 5 Laboratory manuals 5 Mathematical models 5 less ...