Cover title. "Major planning issue." "Updated February 26, 1990."
Bibliography Note
Includes bibliographical references (page 15).
Reproduction Note
Microfilm. Arlington, Va. : University Publications of America, 1991. on 1 microfilm reel ; 35 mm. Low reduction. (Major studies and issue briefs of the Congressional Research Service. 1990 supplement ; reel 9, fr. 1079).