Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=49174#.VJJolMnQrzE Author(s) José Martínez Reyes , Ivan Vera Romero , Meliton Estrada Jaramillo , Agustina Ortiz Soriano , Ignacio Moreno Nava , Francisco Gabriel Montes Ayala , Francisco García Ávalos , Ernesto Mendez Ruiz Affiliation(s) University of the Ciénega of Michoacán State, Sahuayo, México . University of the Ciénega of Michoacán State, Sahuayo, México . University of the Ciénega of Michoacán State, Sahuayo, México . University of the Ciénega of Michoacán State, Sahuayo, México . 1University of the Ciénega of Michoacán State, Sahuayo, México 2Michoacan Society of History, Archaeology and Geography, A.C., La Palma de Jesús, México . Michoacan Society of History, Archaeology and Geography, A.C...
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