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Cover Vol. 19, No. 2
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PDFURN: http://www.revista.ccba.uady.mx/urn:ISSN:1870-0462-tsaes.v19i2.2239
Copyright (c) 2016 . .
This work is licensed under a Creative Commons Attribution 4.0 International License.
URN: http://www.revista.ccba.uady.mx/urn:ISSN:1870-0462-tsaes.v19i2.2239
Copyright (c) 2016 . .
This work is licensed under a Creative Commons Attribution 4.0 International License.