000 00275nam a2200121Ia 4500
100 _aCochran, William G.
942 _cBK
654 _a
245 _aSampling techniques
260 _aMumbai
_bAsia Publishing House
_c1953
082 _a311.21
300 _bHb
_c22cm
_axiv, 330
999 _c351200
_d351200
041 _aeng