@book{107321,
	author = {Matadamas Ortiz, Elías Jaime},
	title = {Reporte de viaje de estudio realizado a Tehuacan Pue. /},
	publisher = {UACH. Departamento de Preparatoria Agrícola,},
	year = {1994.},
	address = {Chapingo. Méx. :}
}