共 8 条
[2]
GAESSLER WG, 1918, IOWA AGR EXPT STA B, V46
[4]
SUMMER FEEDING OF DAIRY CATTLE - A REVIEW
[J].
JOURNAL OF DAIRY SCIENCE,
1959, 42 (09)
:1495-1551
[5]
MORRISON FB, 1956, FEEDS FEEDING, P1042
[6]
NEWLANDER JA, 1935, VERMONT AGR EXPT STA, V386
[8]
SNYDER BH, 1947, FEEDS WORLD THEIR DI, P192