共 19 条
[1]
ALLEN HL, 1972, NUTRIENTS EUTROPHICA
[3]
GAHLER AR, 1969, 66 US ENV PROT AG WO
[4]
GOLTERMAN HL, 1969, VERH INT VEREIN LIMN, V17, P467
[5]
GOLTERMAN HL, 1967, CHEMICAL ENVIRONMENT
[6]
HAJEK B F, 1969, Northwest Science, V43, P130
[7]
Jackson ML, 1958, SOIL CHEMICAL ANALYS
[8]
Lee G, 1970, FACTORS AFFECTING TR, P50
[9]
LEE GF, 1967, EQUILIBRIUM CONCEPTS
[10]
MEHTA N. C., 1954, SOIL SCI SOC AMER PROC, V18, P443