共 158 条
[32]
EVANS LT, 1963, ENVIRONMENTAL CON ED, P111
[33]
EVANS LT, 1963, ENVIRONMENTAL CON ED, P95
[34]
EVANS LT, 1963, ENVIRONMENTAL CON ED, P113
[35]
EVANS LT, 1963, ENVIRONMENTAL CON ED
[36]
GAASTRA P., 1959, MEDEDEL LANDBOUWHO GESCH WAGENINGER, V59, P1
[37]
GAASTRA P, 1963, ENVIRONMENTAL CONTRO, P113
[39]
GARDNER W. R., 1957, SOIL SCI, V83, P295, DOI 10.1097/00010694-195704000-00005
[40]
GARDNER W. R., 1960, SOIL SCI, V89, P63, DOI 10.1097/00010694-196002000-00001