Proceedings of the Symposium on Animal Drug Use--Dollars and Sense held at Ramada Renaissance Hotel, Herndon, Virginia, on May 28 and 29, 1987 / co-sponsored by U.S. Department of Health and Human Services, Public Health Service, Food and Drug Administration, Center for Veterinary Medicine, and U.S. Department of Agriculture, Food Safety and Inspection Service, Extension Service ; edited by Gary E. Stefan ; design and production directed by Paul E. Fitzgerald.