000 00306nam a22001217a 4500
008 200114b xxu||||| |||| 00| 0 eng d
020 _aNil
100 _aSidharth Mukherjee
245 _aEncyclopedia - Samanya Vigyan
260 _aNew Delhi
_bArihant Publications
_c-
300 _a747p.
942 _2udc
_cBK
999 _c14020
_d14020