00532 a2200205 4500 066396 OSt 20210928103749.0 9788190744812 005.43 S64T Singh, Jitender A textbook of operating systems by Jitendra Singh and Savita Gupta New Delhi Khanna Books 2008 962p. Computer Science Operating Systems Gupta, Savita ddc BK 453 453 0 0 ddc 0 0 TXB CURAJ CURAJ 2012-03-07 CSC 410.00 3 005.43 S64T 682 2025-04-17 2025-04-01 2020-09-02 BK