Thickness, percent sand, and configuration of shallow hydrogeologic units in the Powder River Basin, Montana and Wyoming /

Bibliographic Details
Main Author:	Lewis, Barney D.
Corporate Authors:	Geological Survey (U.S.), Montana Bureau of Mines and Geology, United States. Bureau of Land Management
Other Authors:	Hotchkiss, W. R.
Format:	Government Document Map
Language:	English
Published:	Reston, Va. : The Survey, 1981.
Series:	Miscellaneous investigations series (Geological Survey (U.S.)) ; map I-1317.
Subjects:	Groundwater > Powder River Basin (Wyo. and Mont.) > Maps. Aquifers > Powder River Basin (Wyo. and Mont.) > Maps.

Description
Item Description:	Relief shown by spot heights. Includes location maps, text, and electric log. Cartographic material.
Physical Description:	16 maps on 6 sheets : color ; 51 x 32 cm., sheet 70 x 108 cm., folded in envelope 30 x 24 cm.
Bibliography:	Includes bibliographical references.