Clarke, L. Harwood (Leonard Harwood)., 1908- Additional pure mathematics [Book] / L. Harwood Clarke. . - 3rd (revised) ed / prepared by F.G.J. Norton. - London : Heinemann Educational, 1980. - xi,356 p. : ill. ; 22 cm. With answers. All. ISBN: 0435511874 Subjects--Topical Terms: Mathematics. Dewey Class. No.: 510