共 12 条
[2]
DAN J, 1959, 24 AGR RES STA REHOV
[3]
FRIED M, 1956, P SOIL SCI SOC AM, V20, P471
[4]
FRIED MAURICE, 1960, SOIL SCI, V90, P69, DOI 10.1097/00010694-196007000-00010
[5]
HAGIN J., 1960, Ktavim, V10, P43
[6]
HAGIN J, 1959, KTAVIM, V9, P209
[7]
MOSER US, 1959, PLANT SOIL, V10, P356
[8]
OLSEN SR, 1957, P SOIL SCI SOC AM, V21, P144
[9]
OLSEN SR, 1954, 939 USDA CIRC
[10]
RENNIE D. A., 1959, CANADIAN JOUR SOIL SCI, V39, P64