@book{4204,
	author = {Hestenes, Marshall D. and Hill, Richard O.},
	title = {Trigonometry with calculators /},
	publisher = {Prentice-Hall,},
	year = {c1982.},
	address = {Englewood Cliffs, N.J. :},
	note = {"Portions of this book were adapted from material previously published in Algebra and trigonometry with calculators by Marshall D. Hestenes and Richard O. Hill, Jr."--Verso t.p.}
}