@book{6770,
	author = {Palmer, Claude Irwin,},
	title = {Practical Mathematics /},
	publisher = {Gregg Division, McGraw-Hill,},
	year = {c1977.},
	address = {New York :},
	edition = {6th ed.},
	note = {First-3d ed. published under title: Practical mathematics for home study.}
}