Harcourt, R. D. Qualitative valence-bond descriptions of electron-rich molecules : Pauling "3-electron bonds" and "increased-valence" theory / [by] R. D. Harcourt - Springer 1982, 1982 - X, 258 S. - Lecture notes in chemistry 30 . ISBN: 3540115552 0387115552 Subjects--Index Terms: ქიმია ფიზიკური ქიმია Universal Decimal Class. No.: 544