@book{197,
	author = {Stakman, E.C. and Bradfield, Richard, },
	title = {Campaigns against hunger /},
	publisher = {The Belknap Press of Harvard University Press, },
	year = {c1967},
	address = {Cambridge, MA :},
	url = {https://www.cicy.mx/sitios/sib/doctoelectronico/199.pdf}
}