共 16 条
[11]
O'BRIEN A. D., 1970, Tropical Grasslands, V4, P63
[12]
O'Brien A. D., 1972, Tropical Grasslands, V6, P153
[13]
SWANSON ER, 1975, J FARM EC, V39, P382
[14]
1967, MEAT PRODUCER EXPORT
[15]
1979, ANN REPORT
[16]
1961, Q REV AGR EC