共 18 条
[1]
Alexander D. J., 1982, Veterinary Bulletin, V52, P341
[2]
BAHL A K, 1975, Journal of Wildlife Diseases, V11, P360
[3]
Easterday B. C., 1978, Diseases of poultry, P549
[4]
EASTERDAY BC, 1981, 1ST P INT S AV INFL, pR8
[8]
HINSHAW VS, B WHO
[10]
LAVER WG, 1972, B WORLD HEALTH ORGAN, V47, P535