@book{49261,
	author = {Roark, R. Creegan.},
	title = {The present demand and long-term outlock for insecticides},
	publisher = {Comisión Permanente de la Segunda Conferencia Interamericana de Agricultura,},
	year = {1944},
	series = {Publicaciones. Sección 8A},
	address = {México, D. F. :}
}