Reference | {Deposit:: MBMG BULL 54, P. 20.}{Deposit:: ANONYMOUS, 1972 , SILICA ROCK DEPOSITS IN THE PACIFIC NORTHWEST: RAW MATERIALS RESEARCH SECTION INDUSTRIAL AND REAL ESTATE DEVELOPMENT DEPARTMENT, BURLINGTON NORTHERN, INC., ST. PAUL, MINN. REPORT NO. 3 P. 66 - 68}{Deposit:: MBMG BULL 16, P. 86-7.}{Deposit:: USGS PP 428, PL. 1.} |