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

Description
Item Description:	Title from PDF title screen (viewed on March 28, 2011). Includes text, col. ill., tables, and cross-sections. Electronic resource.
Physical Description:	1 online resource (2 sections) : color
Bibliography:	Includes bibliographical references.