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02a0017134;20011205d1993 ekmy0engy01;eng;a z 000yy;r;Monitoring of thermal activity in southwestern Yellowstone National Park and Vicinity, 1980-1993;Irving Friedman, Daniel R. Norton and Roderick A. Hutchinson;Denver;U.S. Government Printing Office;1993;iv, 19 p.;ill;Bulletin;U.S. Geological Survey;no.2067;2001b;aBulletin ; fU.S. Geological Survey ; vno.2067;1980-1993年黄石国家公园西南部及附近的热活动监测;a490;Friedman ; Norton ; Hutchinson;Irving ; Daniel R. ; Roderick A.;101;454438;P;254.2;B87;v2067 ; r1602.01;a07;b1;cP