00940nam a2200265Ia 4500001000700000003000500007005001700012008004100029010002000070035002000090040001300110041001100123043001200134050001800146082002500164100004100189245012300230260002000353300002200373500015400395500001700549504002500566650006000591651002300651130750BIBL20160527191703.0740829s1967    pr       b   s000 0 eng    a 68064688 //r84  a(OCoLC)01053953  aDLCcDLC1 aengspa  anwpr---0 aRC570b.V4413  a301.15/43/36230972952 aVélez de Pérez, Mercedes.2Local10aMental retardation in Puerto Rico: knowledge, beliefs, and attitudes.c[Translator: María Mercedes Carazo de Díaz.  aSan Juanc1967]  aiv, 76 p.c29 cm.  aAt head of title: University of Puerto Rico, School of Medicine, Department of Preventive Medicine & Public Health, Basic Sample of Health & Welfare.  aCover title.  aBibliography: p. 61. 0aMental RetardationzPuerto RicoxPublic opinion.2Local 0aPuerto Rico2Local