00449nam a2200157Ia 4500008004100000020001500041082001600056100002100072245005100093260003300144300000800177650001800185650004200203653002300245653002300268170901s1982    xx            000 0 und d  a0080209203  a551.8bR58I  aRoberts, John L. 0aIntroduction to Geological Maps and Structures  aOxfordbPergamon Pressc1982  a332  aPure Sciences  aScience of the earth and other worlds  aGeological mapping  aStructural geology