@book{76836,
	author = {Sánchez Hernández, Jaime.},
	title = {Caracterización fitosanitaria de 110 colectas de frijol (Phaseolus vulgaris L.), en Chapingo, México},
	publisher = {El autor,},
	year = {1998.},
	address = {Chapingo, Méx. :}
}