Map showing mineral deposits of the midcontinent rift, Lake Superior region, United States and Canada /

Bibliographic Details
Corporate Author:	Geological Survey (U.S.)
Other Authors:	Cannon, William F., McGervey, Teresa A.
Format:	Government Document Map
Language:	English
Published:	Reston, Va. : The Survey ; 1991.
Series:	Miscellaneous field studies ; map MF-2153.
Subjects:	Mines and mineral resources > Superior, Lake, Region > Maps.

Description
Item Description:	Includes text and bibliography. Cartographic material.
Physical Description:	1 map : color ; 72 x 131 cm., on sheet 104 x 137 cm., folded in envelope 30 x 24 cm.