TY  - BOOK
AU  - Schutte Kurt
AU  - Crossley J N
TI  - Proof theory
SN  - 3-540-07911-4
U1  - 511.3 
PY  - 1977///
CY  - Berlin
PB  - Springer-Verlag
KW  - Mathematical logic
KW  - Proof theory
ER  -