000 00257nam a2200097Ia 4500
008 230915s9999 xx 000 0 und d
050 _aLB 1585.3 .B556 1990
100 _aBLOUGH, GLENN O.
245 0 _aELEMENTARY SCHOOL SCIENCE AND TO TEACH IT
942 _cBK
999 _c168956
_d168956