@book{43302,
	author = {Hamberg , Daniel  and Dowd , Douglas F },
	title = {Principles of a Growing Economy :},
	publisher = { Ww Norton & Company ,  },
	year = {1961.},
	address = {New York :},
	url = {https://fll.law.cu.edu.eg/fulltext/bks/B13-07584.pdf}
}