TY  - GEN
AU  - Ritchie, Colin
TI  - Operating systems incorporating UNIX and windows
SN  - 1 85805 302 1
U1  - 005.42282  
PY  - 1997///
CY  - London : 
PB  - Letts Educational Aldine Place 
KW  - Computer programming languages - UNIX and windows
N1  - Includes bibliographical references and index
ER  -