000 00256nam a22000977a 4500
999 _c2079
_d2079
082 _a030
_bSCI
245 _aவிஞ்ஞ◌ானம்
_bTeacher's Resource grade 11
260 _aColombo
_bNational Institute Of Education
_c2015
300 _a69p.
942 _cL