00438nam a22001577a 450000500170000002000150001708200160003210000220004824500650007026000350013530000080017049000380017850500300021665000140024665000200026020250822145104.0  a9552306035  a541.224 TAN  aTantrigoda,Ramani  aBasic Principles of Chemistry : Part II Bonding in Chemistry  aColombobOpen Universityc2010  a72p  aBonding in Chemistry -  CHU  1221  aBachelor Science :Level 3  achemistry  aOpen University