@book{4050,
	author = {Cardona, César and CIAT},
	title = {Problemas de Campo en los Cultivos de Frijol en América Latina /},
	publisher = {CIAT,},
	year = {1982.},
	series = {CIAT; 07SB-1},
	address = {Cali :},
	edition = {2.}
}