1Pontifical Catholic University of Paraná, Curitiba, Brazil
American Journal of Educational Research.
2014,
Vol. 2 No. 12C, 0-0
DOI: 10.12691/education-2-12C-0
Copyright © 2014 Science and Education PublishingCite this paper: Carlos Eduardo de Carvalho Vargas. Preface.
American Journal of Educational Research. 2014; 2(12C):0-0. doi: 10.12691/education-2-12C-0.
Correspondence to: Carlos Eduardo de Carvalho Vargas, Pontifical Catholic University of Paraná, Curitiba, Brazil. Email:
carlos.vargas@ibge.gov.brAbstract