Reference | {Deposit:: LUFT, STANLEY, 1958, NORTHERN PACIFIC RAILWAY COMPANY}{Deposit:: PROPERTIES AND INDUSTRIAL DEV. DEPT., REPORT P. 103.}{Deposit:: CONDIT, P.P., 1928, PHOSPHATE ROCK IN THE THREE FORKS-}{Deposit:: YELLOWSTONE PARK REGION,MT:USGS BULL. 795-G, P.200.} |