00362nam a2200145Ia 450000500170000000800410001708200120005810000180007024500390008826000440012730000090017165000120018094200070019299900170019920240821151611.0240821s9999||||xx |||||||||||||| ||und||  a507 CAR  aCarin, Arthur 0aTeaching science through discovery  aColumbusbCharles E. Merrill Bookc1975  a514p  aScience  cBK  c34355d34355