Graben problems 
/ Proceedings of an International Rift symposium held in...........................10-12 October, 1968 
 - Stuttgart:   E Schweizerbart'sche Verlagsbuchhandlung,   1970 
 - viii, 315p. 
<br/><br/><label>ISBN: </label>3-510-65065014-X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Proceedings
<br/><br/><label>Universal Decimal Class. No.: </label>551.510.53(082.2)