Author's Organization:Hokusei Livestock Hygiene Service Center Hokusei Livestock Hygiene Service Center Hokusei Livestock Hygiene Service Center Chusei Livestock Hygiene Service Center Department of Veterinary Pathology, Nippon Veterinary and Zootechnical College Department of Veterinary Pathology, Nippon Veterinary and Zootechnical College
Published: April 05, 1983Received: March 18, 1982Available on J-STAGE: February 13, 2008Accepted: December 23, 1982
Advance online publication: -
Revised: -