"This document was prepared ... in conjunction with the U.S. Geological Survey (USGS)"--Acknowledgements. "September, 1993." Shipping list no.: 99-0342-M. "402-R-93-046"--Cover. Includes bibliographical references.
OCLC:
(OCoLC)41205130
Locations:
USUX851 -- Iowa State University - Parks Library (Ames)
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.