00366nam a2200109Ia 4500008004100000082001500041100001800056245012500074250001200199260003600211300000900247240913s9999||||xx |||||||||||||| ||und||  a540  PAU/N  aLinus Pauling 4aThe nature of the chemical bond and structure of molecules and crystals : An introduction to modern structural chemistry  a3rd Ed.  bOxford and IBHaNew Delhic1967  a644p