共 6 条
[1]
BURNSIDE O. C, 1964, WEEDS, V12, P109, DOI 10.2307/4040607
[5]
WALKER A., 1968, Isotopes and Radiation in Soil Organic-Matter Studies. Proc. Symp. FAO/ IAEA Vienna., P91
[6]
WICKS GA, 1972, P N CENTRAL WEED CON, V27, P20