共 19 条
[2]
COFFIN DE, 1960, 7 T INT C SOIL SCI, V2, P91
[3]
Freudenberg K., 1968, CONSTITUTION BIOSYNT
[4]
GREENE G., 1962, Journal of Organic Chemistry, V27, P170, DOI 10.1021/jo01048a042
[5]
JAKAB T., 1963, Zeitschrift fur Pflanzenernahrung, Dungung und Bodenkunde, V102, P8, DOI 10.1002/jpln.19631020103
[7]
FURTHER INVESTIGATIONS ON CHEMISTRY OF FULVIC ACID, A SOIL HUMIC FRACTION
[J].
CANADIAN JOURNAL OF CHEMISTRY,
1971, 49 (13)
:2302-&
[8]
KHAN SU, 1971, ISRAEL J CHEM, V9, P667, DOI 10.1002/ijch.197100094
[10]
NORMAN ROC, 1968, PRINCIPLES ORGANIC S