@book{31377,
	author = {Eisenhart, Luther Pfahler},
	title = {Coordinate geometry},
	publisher = {Ginn and company},
	year = {[c1939]},
	address = {Boston},
	note = {"Practicability [of this book] as a text has been tested and proved through use during two years in freshman courses in Princeton university. Each year it has been revised as a result of suggestions."--Pref.}
}