000 00247 a2200109 4500
041 _aSn
100 _aKarunaratna. K.R M.T.
245 _aNava ganithaya kulaka
260 _c1980
_aColobo
_blake House
_g1980
300 _c22
_axii , 136p
942 _cLN
999 _c26360
_d27907