00353nam a22001217a 450000500170000002000220001703500220003903700130006110000180007424500870009226000330017930000190021220180823132647.0  a8185070768c00.00  aB-45777, B-045779  aDPLbENG  aKhanna, J. K.  aDocumentation and information, services, systems and techniques /cby J. K. Khanna  aAgrabY. K. Publishersc2000  a359p.c20 cms.