TY  - BOOK
AU  - Szabo M E
TI  - Algebra of proofs
SN  - 0-7204-2286-8
U1  - 511.3 
PY  - 1978///
CY  - Amsterdam
PB  - North-Holland
KW  - Combinatory logic
KW  - Mathematical logic
KW  - Proof theory
ER  -