M. B. E. MODERN BUSINESS ARITHMETIC - 3RD - NAIROBI NELSON 1969 - 196 0 0 0 0 ISBN: 017-741005-1 Source: 94-65 Subjects--Personal Names: "COSTELLOE, P. J" Subjects--Topical Terms: NATURAL SCIENCES & MATHEMATICS LC Class. No.: HF 5695.H47