Parr, H. E. Modern mathematics. part 1 / H.E. Parr and J.R. Shelley. - 2nd ed. - London : Bell & Hyman, 1969 - viii, 199, xxii p. ; 19 cm. + pbk. Includes index. ISBN: 0713515449 Subjects--Topical Terms: Mathematics Dewey Class. No.: 510