共 10 条
[3]
JONES IR, 1958, OREGON AGR EXPT STA
[7]
POWELL E. B., 1939, Journal of Dairy Science, V22, P453
[8]
POWELL E. B., 1938, Record of Proceedings. American Society of Animal Production, P40
[9]
POWELL E. B., 1941, JOUR DAIRY SCI, V24, P504
[10]
TYZNIK W, 1951, J DAIRY SCI, V34, P493