@book{30451,
	author = {Dwivedi, D. N. },
	title = {Principles of economics /},
	publisher = {Longman,},
	year = {1995},
	address = {Delhi :},
	edition = {2nd ed.},
	note = {Rev. ed. of: Principles of economics / C.T. Sandford, M.S. Bradbury. 1971. (Case studies in economics)}
}