@book{55281,
	author = {Picard, Roger },
	title = {Questions Actuelles D'économie Rurale /},
	publisher = {Recueil Sirey,},
	year = {1939.},
	address = {Paris : },
	url = {https://fll.law.cu.edu.eg/fulltext/bks/B13-08006.pdf}
}