@book{197150,
	author = {Singh, Balmiki Prasad.},
	title = {The problem of change :},
	publisher = {Oxford University Press,},
	year = {1987.},
	address = {Delhi :},
	note = {Includes indexes.},
	url = {http://www.loc.gov/catdir/enhancements/fy0638/87900006-d.html}
}