00273nam a2200109Ia 4500008004100000041000800041082001600049100001400065245004100079260003500120300000800155211209s1978    xx            000 0 und d  aeng  a549 N76 HIL  aHILLS E S  aMINERALS: THEIR BEAUITY & STRUCTURE   aLONDONbORBIS PUBLISHINGc1978  a132