000 00305 a2200121 4500
080 _a519
_bC 663 S
245 1 _aSampling techniques
_cby W.G. Cochran
260 _aNew Delhi
_bAsia Publishing House
_c1962
650 _aSampling Techniques
100 1 _aCochran, W.G.
_d
300 _a330 p.
901 _a79688
999 _c25254
_d25254