@book{74409,
	author = {Nicholson, Walter.},
	title = {Intermediate microeconomics and its application /},
	publisher = {Dryden Press,},
	year = {1994.},
	address = {Chicago :},
	edition = {6th edition.},
	url = {https://fll.law.cu.edu.eg/fulltext/bks/ENGB13-00098.pdf}
}