"GUPTA C . B .,GUPTA VIJAY .," AN INTRODUCTION TO STATISTICAL METHODS - 12 - NEW DELHI VIKAS PUBLISHING HOUSE PVT LTD 1996 - NULL ISBN: 0-7069-9954-1 Subjects--Topical Terms: "MANAGEMENT,STATISTICAL METHODS,SAMPLING,DATA-TECHNIQUES,INDEX HUMBERS" Dewey Class. No.: 658.4033 GUP.