TY  - BOOK
AU  - Fisher, Alec.
TI  - Formal number theory and computability: a workbook 
SN  - 0198531788
U1  - 512.72076 
PY  - 1982///
CY  - Oxford
PB  - Clarendon Press
KW  - Number theory
N1  - Includes index
ER  -