@book{88759,
	author = {Zavala Cruz, Joel and Gutiérrez Castorena, María del Carmen.},
	title = {Impacto ambiental en las tierras del campo petrolero Samaria, Tabasco},
	publisher = {Colegio de Postgraduados. Campus Tabasco,},
	year = {2003.},
	address = {Villahermosa, Tab. :}
}