00273nam a2200109 a 450000500170000002000150001708200190003210000150005124500470006626000290011330000210014220251203110908.0  a8170005159  a025.00285bALI  aAli, Amjad  aDigital libraries and information networks  aNew DelhibEss Essc2007  a414p.c22 cm. HB