000 00275nam a2200097 4500
245 _aComputer and library services
_cSom Nath Madan
100 _aMadan, Som Nath
260 _aDelhi
_bCommonwealth Publishers
_cc1987
300 _axi, 192p.; 18cm.
082 _aLib
_b001.64: 025.5 MAD
999 _c63017
_d63017