TY  - GEN
TY  - GEN
T1  - Symbolic logic
A1  - Lewis, Clarence Irving
A2  - Langford, Cooper Harold
LA  - eng
PP  - New York
PB  - Century
YR  - 1932
ED  - 2nd ed. 1959.
UL  - https://kansalliskirjasto.finna.fi/Record/fikka.748828
KW  - logiikka
ER  -