000 00316nam a2200109Ia 4500
008 211228s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aBetson, Nicholas
245 0 _aData consruction in social surveys
260 _bGeorge Allene and Unwin
_aLondon
_c1984
942 _c1
999 _c237725
_d237725