000 00391nam a2200169Ia 4500
001 8447
003 IN-NITTTR
005 20251114233038.0
008 251113s9999||||xx |||||||||||||| ||eng||
040 _beng
040 _cIN-NITTTR
041 _aeng
082 _a540.7 U1N
100 _aUNESCO. APEID,
245 0 _aNew trends in chemistry teaching. /
_cUNESCO. APEID
942 _2ddc
_cBK
999 _c11085
_d11085