共 8 条
[2]
CURTIN TM, 1963, J AM VET MED ASSOC, V143, P854
[4]
ILLINGWORTH CFW, 1953, PEPTIC ULCERS
[5]
KERNKAMP HCH, 1945, AM J PATHOL, V21, P111
[6]
KOWALCZYK T., 1960, JOUR AMER VET MED ASSOC, V137, P339
[8]
SNEDECOR GW, 1956, STATISTICAL METHODS