000 00287nam a2200121Ia 4500
008 241007s9999||||xx |||||||||||||| ||und||
041 _aTamil
245 0 _aScience and Technology Grade 7
260 _c1999
300 _axi, 291p.;
_bCol.ill.
_c24cm
650 _aScience
942 _cTB
999 _c137519
_d137519