TY  - BOOK
AU  - Ritchie,C.
TI  - Operating systems
SN  - 1858053021 (pbk.) 
AV  - QA76.5 .R58 1997
U1  - 005.43 21
PY  - 1997///
CY  - London
PB  - Letts Educational
KW  - Operating systems (Computers)
N1  - Previous ed.: London : DP, 1995; Bibliography: p272-273. - Includes index
ER  -