Author's Organization:Ebetsu Veterinary Clinical Center, Ishikari Agricultural Mutual Releif Association Ebetsu Veterinary Clinical Center, Ishikari Agricultural Mutual Releif Association Ebetsu Veterinary Clinical Center, Ishikari Agricultural Mutual Releif Association Ebetsu Veterinary Clinical Center, Ishikari Agricultural Mutual Releif Association
Published: June 15, 1990Received: April 28, 1989Available on J-STAGE: February 14, 2008Accepted: January 10, 1990
Advance online publication: -
Revised: -