Are world population trends a problem / edited, with an introduction, by Ben Wattenberg and Karl Zinsmeister. Wattenberg, Ben J. Zinsmeister, Karl. American Enterprise Institute for Public Policy Research. Demography Congresses. Population Congresses. Population policy Congresses. HB849 .A75 1985 312.06 19 UNW Edited papers presented at an AEI conference held in Washington, D.C. in Dec. 1984. Bibliography: p. 51. Washington, D.C. : American Enterprise Institute for Public Policy Research, c1985. c1985. 1985 Text v, 53 p. : eng