Author's Organization:Laboratory of Veterinary Public Health, College of Agriculture and Veterinary Medicine, Nihon University Laboratory of Veterinary Public Health, College of Agriculture and Veterinary Medicine, Nihon University
Published: April 15, 1988Received: June 04, 1987Available on J-STAGE: February 13, 2008Accepted: December 09, 1987
Advance online publication: -
Revised: -