00466cam a22001574a 45000010009000000050017000090080041000260200028000670400013000950820019001081000021001272450054001482600046002023000040002486500020002881288897820210423115121.0020809s2003    ctuab    b    001 0 eng    a0313319308 (alk. paper)  cPK-LaUMT00a550221bKRE-B1 aKrebs, Robert E.14aThe basics of earth science /cby Robert E. Krebs  aWestport, Conn. :bGreenwood Press,c2003  axiv, 342 p. :bill., maps ;c27 cm. 0aEarth sciences.