@book{7424,
	author = {Greenspan, Donald.},
	title = {Introduction to calculus /},
	publisher = {Harper & Row,},
	year = {c1968.},
	address = {New York, NY :},
	note = {"Comprehensive outline in easy-to-use narrative format, supplements major textbooks, solved problems, fully indexed"--Cover.},
	url = {http://www.loc.gov/catdir/description/hc044/91058268.html}
}