00500nam a2200169Ia 4500082001900000100003500019245005000054260002900104300001500133500000500148690000600153700003000159952010000189964001700289921000900306999001500315  a511.3bC678.IL  aCohen, M. R. and Nagel, Ernest  aIntroduction to logic and scientific methodb  aNew YorkbHarcourtc1934  axii, 467p.  a  a   aNagel, Ernest ; jt. auth.  00104070aISIbISId1998-09-07l0o511.3 C678.ILpDP2317r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a8704  c8704d8704