00354nam a2200133Ia 450000500170000000800410001704100080005808200160006610000340008224500320011626000510014830000090019965000120020820250729165806.0250729s2014    xx            000 0 und d  aeng  a540.25 DIRC  aDirectorate of Pre University  aChemoistry Part - I I P U C  aBangalorebDirectorate of Pre Universityc2014  a253p  aScience