00392nam a2200133Ia 4500003000400000008004100004020002700045040000800072100001900080245008500099260004700184300001500231365001200246LDD181029s9999    xx            000 0 und d  a9780521107228cP 24.99  cLDD  aDietrich, R.V. 0aGems, granites, and gravelsbknowing and using rocks and mineralscR.V. Dietrich  aNew YorkbCambridge University Pressc1990  aviii, 173p  bP 24.99