000 00275nam a2200109Ia 4500
008 240531s9999 xx 000 0 und d
082 _a507 SCI
100 _aNULL
245 0 _aScience teaching techniques.
260 _aLondon
_b Albemarle street london
_c1962
942 _cANF
999 _c316145
_d316145