@book{202267,
	author = {Duncan, Ernest R;Capps, Lelon R;Dolciani, Mary P;Quast, W G;Zweng, Marilyn.},
	title = {Modern school mathematics: structure and use.},
	publisher = {Houghton mifflin Company},
	year = {1967},
	address = {New York},
	edition = {1}
}