000			00321nab a2200121Ia 4500
008			170811c99999999xx |||||||||||| ||und||
245			_aElementary failure
300			_a30-39
653			_a Child education
653			_aElementary education
773			_tDown To Earth _gVol. 22 No. 9 (16.9.2013) 2013
942			_cART
999			_c181106 _d181106