000 00274nam a2200109 4500
020 _a08170440815
082 _a021.2 GUP/KNO
100 _aGupta, B L
245 _aKnowledge, Communication and library
_cby Gupta, B L
260 _aJaipur
_bPrintwell pub.
_c1987
942 _cBK
999 _c380494
_d380494