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Publisher: Pearson
ISBN10: 0205773877 ISBN13: 9780205773879 DDC: 302.231 LCC: ZA4150 Edition: International ed.;
   
Publisher: New Academia Pub
ISBN10: 0984583211 ISBN13: 9780984583218 LCC: P96.V35 Edition: ;
 
Publisher: Aurum
ISBN10: 1845135164 ISBN13: 9781845135164 DDC: 025.04 Edition: ;