TY  - BOOK
AU  - Critchley T A
AU  -  Batty K C
TI  - Open systems: the reality
T2  - BSC practitioner series
SN  - 0130307351 (pbk)
U1  - D65,8(B)91, N3 
PY  - 1993///
CY  - New York    
PB  -  Prentice Hall       
KW  -  Operating systems
KW  - Computer science
N1  - Index 373-390p
ER  -