000 002950000a22001330004500
245 _aConducting social research
100 _aLin, N.
100 _aBurt, R.S.
100 _aVaughn, J.C.
260 _aNew York
_bMcGraw-Hill
_c1976
080 _a301.001.5
_bL5
041 _aEN
942 _cBK
999 _c112976
_d112976