000 00292cam a2200133ua 4500
041 _aeng
_h
100 _aSidharthan, P .
245 _aBook Inventions
260 _aThirivanathappuram :
_bSiso Publishers ,
_c2001.
300 _a ; .
504 _a
942 _cBK
999 _c12920
_d12920