"Prepared in conjunction with Abt Associates, Inc. under U.S. Environmental Protection Agency contract no. 68-D9-0169"--2nd prelim. p. "April 1, 1991." Includes bibliographical references. "21P-1003"--Cover.
OCLC:
(OCoLC)27183657
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.