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Preview | Issue Date | Title | Author(s) |
---|---|---|---|
2013-07-15T21:22:53Z | Cambios físicos y químicos de la materia | unad; Salazar, Paola; Mancera, Pilar; Lozano, Felipe; Olarte, Fabio; Paez, Jorge; Pinilla, Mauricio; Salamanca, Cristian; SecretariaED | |
2013-07-15T21:35:00Z | Reacciones y ecuaciones químicas | unad; Salazar, Paola; Mancera, Pilar; Lozano, Felipe; Olarte, Fabio; Paez, Jorge; Pinilla, Mauricio; Salamanca, Cristian; SecretariaED |