@book{206970,
	author = {Ball, E.D. and Annals of the Entomological Society of America 13 (2)},
	title = {The life cycle in hemiptera  (Excluding aphids and  coccids )  /},
	note = {Sobretiro de : Ann. Ent. Soc. Am. 13 (2): 142-151, 1920. Encuadernado con otros impresos similares}
}