000 00398nam a2200157Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a000SB:300
_bC463
100 _aChapin J S
245 _aExperimental designs in sociological research
260 _aNew York
_bHarpar
_c1947
300 _a206p.
650 _aExperimental designs
942 _cBK
999 _c29289
_d29289