000 00321nam a2200133Ia 4500
008 211109s9999||||xx |||||||||||||| ||und||
082 _a0
_bANO
100 _aNo Author,
245 0 _aOperation Reserch
260 _bNATIONAL BOOKSTALL
_aKottayam
_c1900
630 _xGeneral Stack
650 _vGeneralia
942 _cBOOK
999 _c54693
_d54693