@book{62484,
	author = {Seligman, Edwin Robert Anderson,},
	title = {Principles of economics :},
	publisher = {Longmans, Green,},
	year = {1919.},
	series = {American citizen series},
	address = {New York :},
	edition = {8th ed., rev., new impression.},
	note = {Includes index.}
}