000 00280nam a2200109Ia 4500
005 20260205040634.0
008 260111s9999||||xx |||||||||||||| ||und||
082 _a542 Un2C
245 0 _aConstruction of laboratory appratus for schools
260 _aParis
_bUnesco
_c1955
942 _cBK
999 _c9420
_d9420