@book{75686,
	author = {Angeles Martinez, Victor Hugo.},
	title = {Evaluaciòn de leguminosas coberteras en el sistema roza-tumba-quema en La Esmeralda, Santa María Chimalapa, Oaxaca, México. III.},
	publisher = {El autor,},
	year = {1998.},
	address = {Chapingo, Méx. :}
}