00622nam a22001817a 4500008004100000020002000041020001500061050002000076100002100096245009500117260004300212300003300255500002000288650003900308650005700347650001400404700002200418161109b        xxu||||| |||| 00| 0 eng d  a  9780917962875  a0917962877  aGE 79 .D38 1988  aO'Dunn, Shannon   aExploring geology : bintroductory laboratory activities/cShannon O'Dunn; William D. Sill  aPalo Alto, CA : bT.H. Peek, c©1986.  aviii, 292p. :bill. ;c28cm.  aIncludes index.  aGeology xLaboratory manuals.       aGeologyxWest (U.S.)y Handbooks, manuals, etc.       aGeology.   aSill, William D.