000 00294nam a2200121Ia 4500
100 _aJames J.Schlesselman
020 _a0-19-502933-X
942 _cBK
245 _aCase control studies: design,conduct,analysis
260 _aOUP, New York
_cc1982
082 _a614.40723 Sch
300 _axv,354p
999 _c28752
_d28752