Try a different spelling or fewer words — or look in these trusted academic sources. The library team can also source a title through inter-library loan.
Ask a librarian
Das S., . (2003). Unix Concepts and Application. : Tata McGraw Hill.
Das Sumitabha, . 2003. Unix Concepts and Application. : Tata McGraw Hill.
Das Sumitabha, . Unix Concepts and Application. : Tata McGraw Hill. 2003.