Morrison, Peter A, Overview of demographic trends shaping the nation's future : testimony before the Joint Economic Committee, U.S. Congress, May 31, 1978 / Peter A. Morrison - iv, 27 pages ; 28 cm. - The Rand paper series; P-6128 . - The Rand paper series; P-6128 . Includes bibliographical references Subjects--Topical Terms: Migration, Internal--United States Subjects--Geographic Terms: United States--Population