TY - BOOK AU - Allen,John Eliot TI - The magnificent gateway: a layman's guide to the geology of the Columbia River Gorge SN - 0917304101 AV - QE156.C58 A38 U1 - 557.97 PY - 1979/// CY - Forest Grove, Or. PB - Timber Press KW - Geology KW - Columbia River Gorge (Or. and Wash.) KW - Guidebooks N1 - Includes index; Bibliography: p. [134]-138 UR - http://www.archive.org/details/magnificentgatew00alle UR - http://www.openlibrary.org/books/OL4401608M ER -