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Subjects
- Cattle-Feeding and feeds--Michigan.2
- Dairy farming--Economic aspects--Michigan.2
- Dairy farming--Michigan.2
- Dairy farming--United States--History--20th century.2
- Farmers--Michigan.2
- Feeds-Contamination--Michigan.2
- Pesticides--Environmental aspects--Michigan.2
- Polybrominated biphenyls--Toxicology--Michigan.2
- Beef cattle.1
- Ranchers--Michigan.1
- Veterinary toxicology--Michigan.1