共 18 条
- [12] MILLER LR, 1970, WESTERN SECTION AM S, V21, P213
- [13] NAKAGAWA HM, 1975, US GEOL SURVEY B, V1408, P85
- [14] REICHEN LE, 1951, 124 US GEOL SURV CIR
- [15] THORNTON I, 1977, P S MOLYBDENUM ENVIR, V2
- [17] WHITAKER SH, 1972, GEOLOGICAL MAP SASKA
- [18] 1974, STRIPPING COAL DEPOS