共 18 条
[11]
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[12]
Rook J. A., 1974, South Dakota Farm and Home Research, V25, P7
[13]
SMITH LW, 1971, P INT S LIVESTOCK WA, P314
[14]
SUTTON AL, 1968, J ANIM SCI, V27, P1177
[15]
THOMAS JW, 1972, J ANIM SCI, V35, P1115
[16]
VANSOEST PJ, 1965, J ASSOC OFF AGR CHEM, V48, P785
[17]
WIERINGA G. W., 1961, NETHERLANDS JOUR AGRIC SCI, V9, P210
[18]
[No title captured]