共 20 条
[2]
Daniels L. B., 1976, Arkansas Farm Research, V25, P12
[4]
Goering H.K., 1970, AGR HDB
[9]
MORRILL JL, 1984, FEED INT, V5, P20
[10]
MORRILL JL, 1981, J DAIRY SCI S1, V64, P125