@book{3071,
	author = {[by] Bonic, A. Robert, Craford, Estelle, Krantz, Steven and Grabbe, Beth},
	title = {Exercises and Sample Exams for Freshman Calculus with Solutionsto 400Selected Problems /},
	publisher = {Lexington},
	year = {c1971},
	address = {D.C.Heath and Co.}
}