00369cam a2200145ua 45000010005000000080039000050400009000440410012000530820016000651000018000812450044000992600045001433000009001886530026001976893110812n1981    II  |||gr||||Z||||||eng  aMAIN  aEnglish  a330.021 GUP  aGUPTA , C.B .  aAN INTRODUCTION TO STATISTICAL METHODS   aNEW DELHIbVIKASH PUBLISHING HOUSEc1981  a119.  aStatistical Economics