000			003630000a22001450004500
008			140223b1953 xxu||||| |||| 00| 0 eng d
041			_aEng
080			_aR14 J3
082			_aR14 J3
100			_aLanger Susanne K.
245			_aIntroduction to symbolic logic. Edbn.2. Rev.
260			_aNew York _bDover _c1953
650			_aPhilosophy
650			_aSymbolic
999			_c68938 _d68938