000 00282nam a2200121Ia 4500
008 161118s2016 xx 000 0 und d
082 _a507 U6S6
100 _aUNESCO
245 0 _aSource Book for Science Teaching
260 _aParis
_bUNESCO
_c1963
300 _a250 p.
942 _2ddc
999 _c4587
_d4587