00337nam a2200109 a 450000500170000002000180001708200150003510000160005024500820006626000540014830000250020220251203112112.0  a9788122421415  a155.9bRAK  aRakhah, Dev  aNature of thingsbsimple analysis of the physical world and things pertaining  aNew DelhibNew Age International Publishersc2008  axiv,120p.c18cm.bPB