| Reference | {Deposit:: POPOFF, C.C., 1965, AN EVALUATION OF THE WESTERN PHOSPHATE}{Deposit:: INDUSTRY AND I* RESOURCES, PT. 2, MONTANA, U.S. BUREAU}{Deposit:: OF MINES RI 6611, P. 114.}{Deposit:: LUFT, S., 1958, NORTHERN PACIFIC RAILWAY CO. PROPERTIES AND}{Deposit:: INDUSTRIAL DEVELOPMENT DEPT. PHOSPHATE REPORT, P. 103.}{Deposit:: SWANSON, R. W., 1953, STRATIGRAPHIC SECTIONS OF THE}{Deposit:: PHOSPHORIA FORMATION IN MONTANA, PT. 2, 1949-50: USGS}{Deposit:: CIRC. 303, P. 13.} |