共 9 条
[2]
HANSSON A., 1961, Kungliga Lantbrukshogskolans Annaler, V27, P287
[3]
HEIZER E. E., 1938, PROC AMER SOC ANIMAL PRODUCT, V31, P67
[4]
JOHNSON L. A., 1940, JOUR DAIRY SCI, V23, P709, DOI 10.3168/jds.S0022-0302(40)95560-6
[7]
SEATH DWIGHT M., 1940, JOUR DAIRY SCI, V23, P103, DOI 10.3168/jds.S0022-0302(40)95500-X