000 00413nam a2200169Ia 4500
005 20250829153433.0
020 _a9231010581
082 _a507
_bNEW
245 _aNew Unesco source book for science teaching
_cUnesco
260 _aParis
_bUnesco
_c1973
300 _b270p.
500 _aIncludes index
546 _aeng.
650 _aScience-Study and teaching
_914075
700 _aUnesco
_914076
942 _cBK
999 _c10917
_d10917