Cover title. "Date updated 01/25/80." "Issue brief number IB79022." "Date originated 03/07/79." "Environment and Natural Resources Policy Division."
Bibliography Note
Includes bibliographical references.
Reproduction Note
Microfilm. Arlington, VA : University Publications of America, 1980. on 1 microfilm reel ; 35 mm. Low reduction. (Major studies and issue briefs of the Congressional Research Service. 1979-80 supplement ; reel 5, fr. 0726).