Author's Organization:Hokuriku Branch Laboratory, National Institute of Animal Health:Poultry Disease Laboratory, National Institute of Animal Health Hokuriku Branch Laboratory, National Institute of Animal Health Hokuriku Branch Laboratory, National Institute of Animal Health
Published: June 15, 1987Received: September 01, 1986Available on J-STAGE: February 13, 2008Accepted: March 20, 1987
Advance online publication: -
Revised: -