Ivon Png Managerial Economics. Ed 2 - 2nd Ed - Oxford Blackwell Publishing Limited 2003 - 569p Ivon Png: Managerial Economics. Ed 2. (2nd Ed) Oxford. Blackwell Publishing Limited, 2003. 0-631-22525-0--(658.15PNG) ENGLISH ISBN: 0-631-22525-0 Dewey Class. No.: 658.15 / PNG