共 30 条
[2]
DISTRIBUTION OF PYROPHOSPHATE-EXTRACTABLE IRON AND ORGANIC CARBON IN SOILS OF VARIOUS GROUPS
[J].
JOURNAL OF SOIL SCIENCE,
1968, 19 (02)
:251-+
[5]
CATION EXCHANGE CAPACITY VARIATIONS WITH PH IN SOIL CLAYS
[J].
SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS,
1967, 31 (04)
:473-+
[6]
DIXON J. B., 1962, SOIL SCI SOC AMER PROC, V26, P358
[8]
EFFECT OF DISSOLUTION TREATMENT ON STANDARD AND SOIL CLAYS
[J].
SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS,
1971, 35 (01)
:134-&