00466nam a2200133Ia 4500082002400000100007600024110002800100245009000128260003200218300001000250490005400260490001300314500000500327  a304.620973bUn58.PR  aUnited Nations. Commission on Population Growth and the American Future  aRidker, Ronald G. ; ed.  aPopulation resources and the environment; research reportsbcEd. by Ronald G. Ridker  aWashingtonbThe Auth.c1972  a377p.  aCommn. on Population Growth & the American Future  areport 3  a