00294nam a22001217a 4500020001500000082001600015100002100031245002600052260005300078300000800131490001400139650001900153  a9559666606  a541.226 DER  aDeraniyagala,S.P  aIntermolecular Forces  aColombobUniversity of Sri Jayawardenepurac1999  a27p  aMonograph  aIntermolecular