Denver. Population Measures will have to be taken to curb growth. RMN Global Ja 10, 1971 1970 census reveals population of 514,6'78 with Colorado population at 2,207,29. RI^fN F 14, 1971 p.43 Secretary of Interior Rogers C. B. Morton cites need for population control for Denver on way to youth conference. RMN Ap 21, 1971 p.50 Growth mainly in city's suburbs. Ri^iN Jy 23, 1971 p.14 Post Jy 23, 1971 P 15 r^ U