000 00492 a2200253 4500
001 1000017
020 _a2
041 _aeng
080 _a164 Lan
245 _aIntroduction to symbolic logic
250 _a2nd rev. ed.
260 _aNew York
260 _bDover,
260 _c1953
300 _a367 p.
300 _c22 cm
490 _a
100 _aLanger, Susanne K.
700 _a
650 _a
650 _aLogic, Symbolic and mathematical
942 _cBK
942 _2UDC
999 _c38
_d38