共 4 条
[1]
CAMPBELL RB, 1948, SOIL SCI SOC AM PRO, V13, P66
[2]
KEMPER W. D., 1959, SOIL SCI, V87, P345, DOI 10.1097/00010694-195906000-00008
[3]
WILCOX LV, 1963, 1290 US DEP AGR TECH
[4]
1954, 60 US DEP AGR AGR HA