00387nam a2200157Ia 4500003000500000008004100005020000900046040000900055041001200064082002100076100001400097245006300111250000800174260003300182650001400215NDCL180829s9999||||ii |||||||||||||| ||eng||  a2383  aNDCL  aEnglish  a311 RKP216th ed  aRoy, K.P. 0aStatistical techniques in commerce and economicscK.P. Roy  a3rd  c1967bProgressive publishers  aEconomics