共 18 条
[13]
DIFFERENTIATION OF FORMS OF EXTRACTABLE ION AND ALUMINUM IN SOILS
[J].
SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS,
1971, 35 (01)
:33-&
[14]
MUELLER OSCAR P., 1959, SOIL SCI, V88, P107, DOI 10.1097/00010694-195988020-00009
[15]
ROLAND AE, 1947, ACAD NATURAL, V2, P1
[16]
STEPHENS EARL P., 1956, SOIL SCI SOC AMER PROC, V20, P113
[17]
1981, AGRIC CAN LAND RESOU, V142
[18]
1978, AGRIC CAN RES BR PUB, V1646