University of Puerto Rico Rio Piedras campus Social Science Research Center. text pr Río Piedras, Puerto Rico Centro de Investigaciones Sociales, Facultad de Cienias Sociales de la Universidad de Puerto Rico 1957 9999 monographic Quarterly spa

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v. ill. 26 cm. Description based on: Vol. 19, núm. 3 (sept. 1975). nwpr--- Puerto Rico Social conditions Periodicals Social sciences Periodicals 305 W1 RE38V Sociological abstracts 0038-0202 Social welfare, social planning/policy & social development 0195-7988 Psychological abstracts 0033-2887 1973- 0034-7817 59052082 MnMULS 751101 20170223064017.0 104138