Pillai, R S N. Statistics : theory and practice / By R S N Pillai and Bagavathi. - 1st ed. - New Delhi : S Chand and Company Ltd , 2003. - 868p. ; PB 22.2 cm ISBN: 8121904315 Subjects--Topical Terms: Statistical surveySample designCorrelation Dewey Class. No.: 519 / PILR