000 00299nam a22001337a 4500
020 _a9789389495812
082 _a894.8124
_bVAT.K
100 _aVatsala, P.
245 _aKoomankolli /
_cby P.Vatsala
250 _a2 nd ed.
260 _aKottayam:
_bSPCS,
_c2020.
300 _a215P.
942 _cBK
999 _c674048
_d674048