TY  - BOOK
AU  - Wallis, Peter J. L.
TI  - Portable programming
SN  - 9780470273319
U1  - 001.6425 WAL 
PY  - 1982///
CY  - New York 
PB  - : Wiley
KW  - Software compatibility
KW  - Programming
KW  - Operating systems
KW  - Peter J L Wallis
KW  - Computer science
ER  -