000 00291nam a2200121Ia 4500
008 221117b |||||||| |||| 00| 0 eng d
040 _aBGL
_cBGL
082 _a519.52COC:S
100 _aCochram, William C.
245 0 _aSampling Techniques
260 _aNew Delhi
_bWiley
_c1977
942 _cWD
999 _c19188
_d19188