302.23
R337S
           Rattu, Krishan Kumar
               Suchna tantra aur prasaran madhyam ikkiswi shatabdi mein badalti bhumika \ Krishan Kumar Rattu - Jaipur : Mangaldeep Publications, 2001.
               Pt.2 (261p)
                ISBN: 81-7594-075-1

142551
                Subjects: Information technology; Telecommunication.