DAS SUMITABHA, . (2005). UNIX: CONCEPTS & APPLICATIONS. : TATA MC GRAW HILL PU.
DAS SUMITABHA, . 2005. UNIX: CONCEPTS & APPLICATIONS. : TATA MC GRAW HILL PU.
DAS SUMITABHA, . UNIX: CONCEPTS & APPLICATIONS. : TATA MC GRAW HILL PU. 2005.