@book{57985,
	author = { L'association Internationale  Des Sciences Economiques  and Leduc ,Gaston },
	title = {Le Développement Économique /},
	publisher = {Editions Cujas ,},
	year = {1968.},
	address = {Paris :},
	url = {https://fll.law.cu.edu.eg/fulltext/bks/B13-09222.pdf}
}