000 00354nam a2200145Ia 4500
001 9623
008 170722s9999 xx 000 0 und d
100 _aKrishan Kumar
245 _aReference service /
260 _aVikas :
_bNew Delhi ,
_c1978.
300 _avii+406
_c22cms
653 _aLibrary Science
653 _aReference Service
942 _cGEN
999 _c159313
_d159313