000 00508cam a2200205ua 4500
001 42005
005 20171214165450.0
007 ta
008 110909s1990 a g b000 u ben u
020 _cNULL (HB)
040 _aMAIN
041 1 _aben
_hNULL
082 1 4 _a891.441
_bDEV/C
100 1 _aDevnath, Prabir kumar .
245 1 0 _aChalchitra sukdhukha /
_cby Prabir kumar Devnath.
260 _aKolkata :
_bMondal ,
_c1990.
300 _a56p. :
_bills. diagrams ;
_c24cm .
504 _aNULL
942 _cBK
999 _c41682
_d41682