00378nam a2200157Ia 450000500170000000800410001724500360005826000280009430000180012202000180014054600150015850500120017333600090018533700150019433800110020920260803094243.0251212s2010    xx            000 0 und d1 aPolar Opposites /cErik Brooks.  a :bScholastic,cc2010.  a: bcol. ill.  a9780545646048  ain English  aLex 310  atext  aunmediated  avolume