Quantum mechanics and the structure of atoms and ions. Development and concepts of atomic physics -- Hydrogen atom -- Two-electron atoms and ions -- Light atoms -- Structure of heavy atoms -- Excited atoms -- Positive and negative ions -- Autoionization states of atoms and ions -- Atoms in interactions and collisions. Atoms in external fields -- Interactions involving atoms and ions -- Diatomic molecules -- Atom interaction in systems of many bound atoms -- Elastic collisions of atomic particles -- Resonant processes in slow atomic collisions -- Inelastic slow atomic collisions -- Collisions with transitions in states of continuous and quasi-continuous spectra