000 00422 a2200169 4500
005 20250829153709.0
020 _a923101241X
082 0 4 _a540.7
_bNEW
100 _aUNESCO
_933072
245 0 0 _aNew trends in chemistry teaching
_cUnesco
260 _aParis
_bUnesco press
_c1975
300 _a159p.
490 1 _aTeaching of basic sciences series
546 _aeng.
650 _aChemistry-Teaching
_929477
942 _cBK
999 _c15091
_d15091