共 8 条
- [1] HILLEBRAND WG, US GEOL SURVEY B, V700, P169
- [2] HOLLADAY JS, COMMUNICATION
- [3] LUNDELL, 1920, J IND ENG CHEM, V12, P346
- [4] RANDALL, 1907, AM J SCI, V24, P313
- [5] THORNTON, 1914, AM J SCI, V37, P407
- [6] THORNTON, 1914, AM J SCI, V37, P137
- [7] STANDARD METHODS CHE, V1, P320
- [8] ANAL CHEM, V3, P638