Journal Name : Revista Saber Digital ISSN No. : 1982-8373 Publisher : Centro de Ensino Superior de Valença Advisory board Advisory board Advisory board Dr. Rajendra Shendge Ecaterina Patrascu Flavio de Sao Pedro Filho A. R. Burla College, India Spiru Haret University, Bucharest, Romania Federal University of Rondonia, Brazil Directory of Research Journals Indexing Wesite : http://www.olddrji.lbp.world Mail us at : info@drji.org / ashok.drji@gmail.com