Relief shown by contours and spot heights. "Contour interval 40 feet unless otherwise noted." Panel title: Sky Lakes users guide. On verso: text and ill.
OCLC:
(OCoLC)8530642
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.