000 00281nam a2200121Ia 4500
008 211201s9999 xx 000 0 eng d
082 _a372.35
100 _aWSASSERMANN,SELMA
245 0 _aTEACHING OF ELEMENT SCIENCE
300 _aix,320
650 _aEducation
942 _2ddc
_cDOE
999 _c4388
_d4388