Cover title. "Date updated 11/05/81." "Issue brief number IB80022." "Date originated 02/14/80." "Environment and Natural Resources Policy Division."
Bibliography Note
Includes bibliographical references.
Reproduction Note
Microfilm. Arlington, VA : University Publications of America, 1982. on 1 microfilm reel ; 35 mm. Low reduction. (Major studies and issue briefs of the Congressional Research Service. 1981-82 supplement ; reel 5, fr. 1354).