共 12 条
[3]
HALL NS, 1953, 101 N CAR AGR EXP ST
[4]
HAWKS SN, 1970, PRINCIPLES FLUE CURE
[6]
MATTAS RICHARD E., 1965, CROP SCI, V5, P181, DOI 10.2135/cropsci1965.0011183X000500020028x
[7]
MCCANTS CB, 1962, SOIL SCI SOC N CAROL, V5, P30
[9]
RAPER CD, 1967, TOBACCO SCI, V11, P190