Drug resistance Pesticide and Drug Resistance 3 Pesticides and Drugs; Control, (New March 2000) 3 Antibacterial agents 2 Cattle 2 Disease control 2 Drug therapy 2 Epidemiology 2 Genetics and Molecular Biology of Microorganisms, (New March 2000) 2 Goats 2 Man 2 Ruminants 2 Sheep 2 Susceptibility 2 Adenocarcinoma 1 Agalactia 1 Anthelmintics 1 Antigenic variation 1 Antiparasitic agents 1 Avermectins 1 Bacterial diseases 1 Biochemistry and Physiology of Microorganisms, (New March 2000) 1 Biological Transport 1 Cats 1 Clinical aspects 1 Diagnosis 1 Diagnosis of Animal Diseases, (New March 2000) 1 Diagnostic techniques 1 Disease prevalence 1 Disease prevention 1