In May, 1980, Mt. St. Helens erupted, releasing volcanic ash that reached from the Washington coast to Minneso
ISBN10 : 1943900434 , ISBN13 : 9781943900435
Page Number : 80
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A guidebook to the Sunset Crater Volcano National Monument and the Wupatki Indian ruins in northern Arizona de
ISBN10 : 9780911408676 , ISBN13 : 0911408673
Page Number : 48
Scientists estimate that this "rather rare beast" in northern Arizona first erupted in A.D. 1064, and then on
ISBN10 : 9781877856464 , ISBN13 : 1877856460
Page Number : 15
"Blends the scientific issues, the commercial and legal factors, and the personalities involved into a sure-fo
ISBN10 : 0816509689 , ISBN13 : 9780816509683
Page Number : 442
" . . . bangs have replaced whimpers and the geological record has become much more exciting than it was thoug
ISBN10 : 3540404414 , ISBN13 : 9783540404415
Page Number : 522
This special volume represents the current state of knowledge of the status of Crater Lake, an ecosystem essen
ISBN10 : 9781402058240 , ISBN13 : 1402058241
Page Number : 280
July 1864. Grant's siege of Petersburg is at a standstill. A Federal regiment made up mostly of Pennsylvania c
ISBN10 : 1886661065 , ISBN13 : 9781886661066
Page Number : 101