A tunnel runs through it : an inside view of the Tualatin Mountains /

Bibliographic Details
Main Author:	Walsh, Ken
Corporate Authors:	Portland State University, Shannon & Wilson, Tri-County Metropolitan Transportation District of Oregon, Geological Survey (U.S.)
Format:	Government Document Map
Language:	English
Published:	[Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2011.
Series:	Scientific investigations map ; 3144.
Subjects:	Tualatin Mountains (Or.) > Maps. Geology > Oregon > Tualatin Mountains > Maps.
Online Access:	https://purl.fdlp.gov/GPO/gpo5463

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