Bedrock topography of northeast Iowa /

Bibliographic Details
Main Author: Hansen, Robert E.
Corporate Authors: Geological Survey (U.S.), Iowa Geological Survey
Format: Government Document Map
Language:English
Published: Reston, Va. : The Survey, 1975.
Series:Miscellaneous investigations series (Geological Survey (U.S.)) ; map I-933.
Subjects:
Description
Item Description:Relief shown by spot heights.
Includes text.
Cartographic material.
Physical Description:1 map on 2 sheets : color ; 106 x 135 cm., folded in envelope 30 x 24 cm.
Bibliography:Includes bibliographical references.