@book{51452,
	author = {Winchell, Alexander Newton, and Winchell, N. H.},
	title = {Elements of optical mineralogy :},
	publisher = {J. Wiley & sons, inc.;},
	year = {1931-<1951   >},
	address = {New York,},
	edition = {4th ed., rev. and enl. ...},
	note = {First and second editions by Newton H. Winchell and Alexander N. Winchell.}
}