共 9 条
[4]
HARLEY JL, 1969, BIOLOGY MYCORRHIZA
[5]
MARX DH, 1969, PHYTOPATHOLOGY, V59, P153
[7]
Schmidt E. L., 1973, "Modern Methods in the Study of Microbial Ecology". Bulletins from the Ecological Research Committee. Sweden, V17, P67
[9]
ZAK B, 1971, USDA1189 MISC PUBL, P38