| Reference | {Deposit:: POPOFF, C. C. 1965, AN EVALUATION OF THE WESTERN PHOSPHATE}{Deposit:: INDUSTRY AND I* RESOURCES, PT. 2, MONTANA, USBM RI 6611.}{Deposit:: LUFT, S., 1958, NORTHERN PACIFIC RAILWAY CO. PROPERTIES AND}{Deposit:: INDUSTRIAL DEVELOPMENT DEPT. PHOSPHATE REPORT.}{Reserve-Resource:: SWANSON, ROGER, 1973, GEOLOGY AND PHOSPHATE DEPOSITS OF THE}{Reserve-Resource:: PERMIAN ROCKS IN CENTRAL WESTERN MONTANA, USGS PROF. PAPER}{Reserve-Resource:: 313-F, P. 779-833.} |