Ifrah, George. The Universal history of numbers / George Ifrah. - New Delhi : Penguin, 2005. - 3V. Reference accession no RR48 ISBN: 0143032593 0143032577 0143032585 Standard No.: 1981 [old SOUL v1.0 record id] Subjects--Topical Terms: Numbers Dewey Class. No.: RR 513.5 / If 1 u