共 45 条
[1]
ANDRE D. A., 1967, Journal of the American Water Works Association, V59, P503
[2]
WATER-QUALITY IMPLICATIONS OF CATTLE GRAZING ON A SEMIARID WATERSHED IN SOUTHEASTERN UTAH
[J].
JOURNAL OF RANGE MANAGEMENT,
1976, 29 (02)
:109-113
[3]
DARLING LA, 1973, JUN WAT AN REL S TWI, P1
[5]
DIESCH SL, 1970, AGR PRACTICES WATER, P265
[6]
DIXON JE, 1977, 1977 ANN M SOC AGR E
[9]
DUTKA BJ, 1973, J ENV HLTH, V36, P169
[10]
ELLIS JR, 1976, ASAE762560 AM SOC AG