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… Inner-City Junior High School Students:Defensive. Behavior vs.Aggressive Delinquency.” American Journal of Public Health 83(11):1604-1608. 1993.En: La violencia juvenil en las Américas. Estudios innovadores de investigación, …
… o R., et al (2007). Castillo R., (1988). Analysis of the curricular needs of the program of English as a FL in a school of Public Administration in Colombia. Doctoral dissertation. The University of Texas at Austin. Falk, B. & Blumenreich, M. ( …