Author's Organization:Department of Veterinary Surgery, School of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine Department of Veterinary Surgery, School of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine Department of Veterinary Surgery, School of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine Shikaoi Agriculture Mutual Aid Association
Published: February 15, 1989Received: April 28, 1988Available on J-STAGE: February 13, 2008Accepted: September 20, 1988
Advance online publication: -
Revised: -