共 21 条
[4]
CHANCELLOR RJ, 1965, 7 P BR WEED CONTR C, P599
[5]
Chepil W. S., 1946, SCI AGRIC [OTTAWA], V26, P307
[6]
FORWARD B. F., 1949, PROC ASSOC OFFIC SEED ANALYSTS, V39, P83
[9]
HARPER JL, 1957, 4TH P INT C PLANT PR, P415
[10]
METSON AJ, 1956, REP DEP SCIENT IND R, P139