共 14 条
[2]
BENTLEY J. R., 1958, JOUR RANGE MANAGEMENT, V11, P133, DOI 10.2307/3893716
[8]
JONES MILTON B., 1960, AGRON JOUR, V52, P459
[9]
Klock G. O., 1975, Sulphur Institute Journal, V11, P4