共 7 条
[1]
Coffman Franklin A., 1961, OATS OAT IMPROVEMENT
[2]
GOULDEN CH, 1950, 1938 48 CER DIV CENT
[3]
Jackson ML, 1958, SOIL CHEMICAL ANALYS
[4]
JOHANSSON O, 1956, STAT JORDBRUKSFORSOK, V62, P91
[5]
ODYNSKY W, 1961, SS3 U ALB B
[6]
STENUIT D., 1960, Agricultura, V8, P141
[7]
STENUIT D., 1957, Pedol., V7, P271