TY  - BOOK
AU  - Durr, Karl
TI  - Propositional Logic of  Boethius
U1  - 510.l 
PY  - 1951///
CY  - Amsterdam
PB  - North-Holland Publishing Company
KW  - Mathematics
KW  - Logic
N1  - 1 Book ML and 1 Book CL
ER  -