共 5 条
[1]
HODGE CA, 1966, MEMORANDUM SOIL SURV, P52
[2]
JOHNSTON AE, 1970, 1969 ROTH EXP STAT 2, P69
[4]
THOMASSON AJ, 1969, SPECIAL SURVEY SOIL, P13
[5]
1973, TECHNICAL B MINISTRY, V27