@book{39390,
	author = {Fierro G., Luis Humberto. and Alba Robayo, Vicente.},
	title = {Análisis de contenido del programa radial agropecuario "El ICA informa"},
	publisher = {Instituto Colombiano Agropecuario,},
	year = {1972},
	series = {Boletín de investigación},
	address = {Bogotá :}
}