00684nam a2200181Ia 4500001000700000003000500007005001700012008004100029040001900070245021200089260005700301300001000358336000800368337001600376338001900392650005200411650003900463221329BIBL20180914124941.0990602|1974||||ca |||||||||||||| ||eng|d  aEVLGbspaerda10aPopulation change :ba case study of Puerto Rico /cprepared by Sociological Resources for the Social Studies;Sponsored by the American Sociological Association; supported by the National Science Foundation.  aBelmont, California : Allyn and Bacon, Inc. :c1974.  a54 p.  btxt  2rdamediabn  2rdacarrierbnc 0aPopulationxSocial AspectszPuerto rico.2Local 0aSocial changezPuerto Rico.2Local