00414nam a2200169Ia 4500003000400000005001700004008004100021020001900062040000700081041000800088082001300096100002200109245005800131260003400189300000900223650001200232OSt20260305153647.0250729s1986    xx            000 0 und d  a978-0132956680  cAL  aeng  a500 SHAE  aShannono dunn M S  aExploring geology - introductory laboratry activities  aPaloalto, C AbT.H.Peekc1986  a292p  aScience