@book{6565,
	author = {Aguilar Ruiz, Demetrio Gilberto.},
	title = {Control químico de la maleza en frijol (Phaseolus vulgaris L) sembrado bajo dos sistemas de labranza San Lucas, Chiapas},
	publisher = {El autor,},
	year = {1992},
	address = {Chapingo, Méx. :},
	note = {62-208}
}