00686nam a2200157Ia 4500001000700000003000500007005001700012008004100029110011500070245018400185260002800369300001900397490003600416504003100452651004500483131944BIBL20240725062715.0931014s1979||||pr a   ||||||||||1||eng|d 0aPuerto Rico.bUniversidad. Recinto Universitario de Mayagüez.bColegio de Administración Comercial.2Local10aRetail food price differential and supermarket cost / price marginsba comparison between Puerto Rico and the United Statescby Arthur J. Mann, Omar Ruíz [and] Jorge I. Vélez.  aMayagüez, P.R.c1979.  a54 p.btables.0 aResearch papervno. 79-12Local  aBibliographical footnotes. 0aPuerto RicoxMarketsxStatistics.2Local