Structure and composition of trees of secondary deciduous dry forest in the Central Depression, Chiapas, Mexico Údair: Gordillo Ruiz, Mercedes Concepción, Pérez Farrera, Miguel Ángel, Castillo Santiago, Miguel Ángel

Regeneration and conservation of the communitary forest, the case of Chichila, Guerrero Údair: Valencia Negrete, Mauricio, Castillo Santiago, Miguel Angel, Bello Baltazar, Eduardo, Vásquez Sánchez, Miguel Ángel