Snell, Kenneth Scotchburn. New mathematics 3; a unified course for secondary schools / [by] K. S. Snell & J. B. Morgan. - [2d ed.] - [London] : Cambridge University Press, 1971 - v. illus. 23 cm. LCCN: Subjects--Topical Terms: Mathematics LC Class. No.: QA39.2 Dewey Class. No.: 510