Reference | {Deposit:: POPOFF,C.C.,1965, AN EVALUATION OF THE WESTERN PHOSPHATE}{Deposit:: INDUSTRY AND I* RESOURCES,PT.2, MONTANA, USBM RI 6611,P114}{Deposit:: LUFT,S.,1958, NORTHERN PACIFIC RAILWAY CO. PROPERTIES AND}{Deposit:: INDUSTRIAL DEVELOPMENT DEPT. PHOSPHATE REPORT.}{Deposit:: SWANSON, R.W., 1953, STRATIGRAPHIC SECTIONS OF THE}{Deposit:: PHOSPHORIA FORMATION IN MONTANA, PT. 2, 1949-50: USGS CIRC.}{Deposit:: 303, 21 PP.}{Deposit:: SWANSON, 1970, USGS PROF. PAPER 313-E, P. 721 (LOT 1307).}{Deposit:: USGS CIRC. 303, P. 116.} |