90.- O. Energy levels in closed shell nuclei.- P. Energy levels of nuclei with N < 90.- General references.- Resonance Processes by Neutrons..- I. Introduction.- II. Theory and experimental results.- References.- Nuclear Reactions at High Energies..- A. Résumé.- I. Introduction.- II. Information obtainable from high energy nuclear physics.- B. Theoretical concepts useful for high energy reactions.- C. Experimental techniques of high energy physics.- I. High energy machines.- II. Sources of particles.- III. Detection techniques.- D. Reactions of nucleons.- E. Electron reactions.- F. Nuclear reactions of X-rays.- G. Reactions of mesons.- General references.- Sachverzeichnis (Deutsch-Englisch).- Subject Index (English-German).