TY  - BOOK
AU  - Habermann,A.Nico
TI  - Introduction to operating systems
SN  - 057421075X
AV  - QA76.6 .H28
U1  - 004.4/INT 
PY  - 1976///
CY  - Chicago
PB  - Science Research Associates
KW  - Computer programming
KW  - Operating systems (Computers)
N1  - Includes bibliographies and index
ER  -