Relief shown by contours and spot heights. Cover title. At head of maps: United States Department of the Interior, Geological Survey, modified for USDA Forest Service. Shipping list no.: 89-624-P. Includes index to Geological Survey topographic maps.
OCLC:
(OCoLC)20709450
Locations:
OVUX522 -- University of Iowa Libraries (Iowa City)
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.