Professor D Ivanenko is well known for his fundamental contributions to the establishment of the proton-neutron model of nuclei, elaborating the first non-phenomenological theory of nuclear forces. This volume consists of reviews and original scientific reports devoted to the modern problems of theoretical physics. The topics covered include gravitation and cosmology, fundamentals of quantum physics, nuclear physics and thermodynamics. Contents:Non-Abelian Einstein-Yang-Mills Fields (D V Galt'sov et al.)Spacetime as a Continuum with Microstructure and Metric-Affine Gravity (F W Hehl & Y Ne'eman)Decohering WKB Components in the Wave Function of the Universe (A Gangui et al.)Berry's Phase and the Lense-Thirring Effect (Y Q Cai & G Papini)Torsion and Quantum Effects (V de Sabbata & C Sivaram)On the Experimental Estimates of the Axial Torsion Mass and Coupling Constants (Yu N Obukhov & I V Yakushin)From Quantum Mechanics to Riemannian Space-Time (J Audretsch & C Lämmerzahl)Electromagnetic Multipoles in External Fields (I M Benn & R W Tucker)Stochastic-Dynamical Approach to Quantum Mechanics (M Namiki & S Tanaka)Quantum Theory of Scattering for Weak and for Gravitational Interactions (J Weber)and other papers Readership: High energy physicists and nuclear physicists. Keywords:Theoretical Physics;D Ivanenko;Einstein-Yang-Mills Fields;Riemannian Space-Time