共 17 条
[1]
ALMQUIST H. J., 1934, POULTRY SCI, V13, P116
[2]
CHENEY B, 1947, UNPUB
[3]
CHENEY B, 1942, UNPUB
[4]
GODFREY A. B., 1937, POULTRY SCI, V16, P216, DOI 10.3382/ps.0160216
[6]
KENNARD DC, 1945, US EGG POULTRY MAG, V51, P86
[7]
LUND W. A. VICTOR HEIMAN, 1938, POULTRY SCI, V17, P372
[8]
MORGAN C. L., 1932, POULTRY SCI, V11, P172, DOI 10.3382/ps.0110172
[9]
MUNRO S. S., 1942, SCI AGRIC [OTTAWA], V22, P698
[10]
MUNRO S. S., 1940, SCI AGRIC [OTTAWA], V21, P53