TY  - BOOK
AU  - Liskov, Barbara
TI  - Abstraction and specification in program development
SN  - 9780262121125
U1  - 005.12 LIS 
PY  - 1986///
CY  - Cambridge, Mass. 
PB  - : MIT Press
KW  - Computer programming.
KW  - PASCAL
KW  - Liskov, Barbara
KW  - Guttag, John
KW  - Computer Science
ER  -