共 8 条
[1]
BREMNER J. M., 1959, JOUR AGRIC SCI, V52, P147, DOI 10.1017/S0021859600036625
[2]
HINMAN W. C., 1964, CANADIAN JOUR SOIL SCI, V44, P151
[3]
JANSSON SVEN L., 1958, K LANTBRUKSHOGSKOLANS ANNALER, V24, P101
[4]
NOMMIK HANS, 1963, ACTAAGRSCAND, V13, P371
[5]
PAWLUK S., 1961, CANADIAN JOUR SOIL SCI, V41, P228
[8]
STEWART B. A., 1963, SOIL SCI SOC AMER PROC, V27, P41