@book{8521,
	author = {Limón Limón, Arturo.},
	title = {Comportamiento de genotipos de maíz y frijol en callejones con Erythrina poppigiana, Calliandra colothyrsus y Gliricidia sepium},
	publisher = {El autor,},
	year = {1993},
	address = {Turrialba, Costa Rica :}
}