共 20 条
- [2] BLOOMFIELD G, 1972, J SOIL SCI, V23, P1
- [3] Buchanan R. E., 1974, BERGEYS MANUAL SYSTE, V8th, DOI DOI 10.1007/978-0-387-21609-6
- [5] DUGAN P R, 1975, Ohio Journal of Science, V75, P266
- [6] DUGAN PR, 1978, METALLURGICAL APPLIC
- [7] Duval C., 1963, INORGANIC THERMOGRAV
- [9] HUTCHINSIN W, 1964, J APPL BACTERIOL, V27, P244
- [10] LEPPER HA, 1950, OFFICIAL METHODS ANA