000 00265nam a2200109Ia 4500
008 220201s9999 xx 000 0 eng d
100 _aCOCHRAN (WILLIAM G)
245 0 _aSAMPLING TECHNIQUES
250 _a3RD
260 _bWILEY EASTERN LTD. NEW DELHI
942 _2ddc
999 _c95743
_d95743