共 4 条
[1]
GREENLAND D. J., 1958, Journal of Agricultural Science, V50, P82, DOI 10.1017/S0021859600029919
[2]
HAHN BE, 1942, SOIL SCI, V55, P113
[3]
RICH CHARLES I., 1962, SOIL SCI, V93, P87, DOI 10.1097/00010694-196202000-00003
[4]
1976, TRACER MANUAL CROPS, P226