000 00269nam a2200109Ia 4500
999 _c15457
_d15457
100 _aMorris R Cohen
245 _aIntroduction to Logic and Scientific Method
260 _c1989
_bALLIED PUBLISHERS
_aAhmedabad
300 _axii+467
700 _aErnest Nagel
942 _cBK