000 00411nam a2200145Ia 4500
008 200312s9999||||xx |||||||||||||| ||und||
020 _a9780486446554
082 _a162
_bPra
100 _aPrawitz, Dag
_9731
245 0 _aNatural Deduction: A Proof-Theoretical Study
260 _aNew York
_bDover Publications
_c2006
300 _aviii, 113p.
650 _aLogic, Symbolic and mathematical
_9708
942 _cBK
_02
999 _c1117
_d1117