Final environmental statement, administrative action : for Freeway 520 in Delaware and Dubuque Counties from 0.5 mile east of Iowa 38 East to U.S. 61 / U.S. Department of Transportation, Federal Highway Administration, and Iowa State Highway Commission.
"This highway improvement is proposed for funding under title 23, United States Code. This statement for the improvement was developed in consultation with the Federal Highway Administration and is submitted pursuant to 42 U.S.C 4332 (2)(C)." "September 1974"--Cover. Includes bibliographical references (p. 145-146).
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