共 3 条
[1]
EFFICIENCY OF CONVERTING NUTRIENTS AND CULTURAL ENERGY IN VARIOUS FEEDING AND GRAZING SYSTEMS
[J].
JOURNAL OF RANGE MANAGEMENT,
1976, 29 (03)
:186-191
[2]
GATEWOOD LB, 1973, ENERGY CRISIS COTTON
[3]
LOCKERTZ W, 1975, AGRICULTURAL RESOURC