共 184 条
[2]
ALLAWAY W. H., 1968, Advances in Agronomy, V20, P235
[3]
ANDERSSON A, 1976, Swedish Journal of Agricultural Research, V6, P151
[4]
ANDERSSON A, 1977, SWED J AGR RES, V7, P7
[5]
[Anonymous], 1973, SOIL CONDITIONS PLAN
[6]
[Anonymous], 1973, SOILS SOIL FERTILITY
[7]
[Anonymous], 1970, MODERN FARMING SOIL