@book{207026,
	author = {Ball, E. D. and Fenton, F.A. and Journal of Economic Entomology 13 (2)},
	title = {What per cent of tipburn is caused by the potato leafhopper  /},
	note = {Sobretiro de: J. Eco. Ent. 13 (2): 1920. Encuadernado con otros impresos similares}
}