00300nam a2200121Ia 450000500170000000800410001704100080005808200150006610000180008124500330009926000370013230000090016920260720174540.0260720s2004    xx            000 0 und d  aeng  a540.7 SINM  aSingh, Manpal  aModern teaching of chemistry  aNew DelhibAnmol Publisherc2004  a383p