TY  - BOOK
AU  - Sigwart, Christoph .
TI  - Logic
U1  - 160 
PY  - 1894///
CY  - London
PB  - Swan Sonnenschein & Co.
KW  - Logic
KW  - G-Philosophy
KW  - T/G-Philosophy
KW  - T/G-Logic
ER  -