@book{199115,
	author = {Mena Covarrubias, Jaime and INIA. Campo Agrícola Experimental Zacatecas},
	title = {Plagas del frijol en Zacatecas  /},
	publisher = { INIA. Campo Agrícola Experimental Zacatecas},
	address = {Calera de Victor Rosales, Zac.  :}
}