TY  - GEN
AU  - Lerman,M
TI  - Degrees of unsolvability: local and global theory
T2  - Perspectives in mathematical logic
SN  - 0387121552 (U.S.)
PY  - 1983///
CY  - Berlin, New York
PB  - Springer-Verlag
KW  - Unsolvability (Mathematical logic)
N1  - Cuprinde bibliografie si index
ER  -