Can we Calculate the Fundamental Dimensionless Constants of Physics?.- Observables in General Relativity.- The Quantum Hall Effect Part I: Basic Experiments.- Quantum Hall Effect Part II: Metrological Applications.- Fundamental Physical Constants.- Variability of the Physical Constants.- The Measurement Problem of the General Matter Field Theory as Required by the Copenhagen School.- On the Relations between Fundamental Constants.- Quantum Electrodynamics and Fundamental Constants.- Searching for the Source of the Fifth Force.- Lorentz noninvariance and the Universality of free fall in Quasi-Riemannian Gravity.- Status of the Newtonian Gravitational Constant.- Time Variation of the Gravitational Constant.- The Supernova SN 1987A and the Neutrino Mass.- The Fifth Force Experiment at the TIFR.- Analysis of Ground States of General Relativity Theory and Relativistic Theory of Gravitation.- Gravitational-Relativistic Metrology.- Gravitational Waves.- The Gravitational Wave Experiment of the Rome Group. Data Recorded during SN1987A.- Solar-System Tests of General Relativity, the Transition to Second Order.- The Weyl-Dirac Theory and the Variation of the Gravitational Constant.- Selected Problems of Gravitational Wave Experiment.- Introductory Lectures on the Physics of High Energy Densities: Theories, Models, Measurements.- Detectors of Laboratory Gravitation Experiments and a new Method of Measuring G.- to the Theory of Fields in Finsler Spaces.- Neutrinos, Gravitons, Metrology and Gravitational Radiation.- On Quirino Majorana's Papers Regarding Gravitational Absorption.- I: Quelques Recherches sur l'Absorption de la Gravitation par la Matière.- II: Theoretical and Experimental Researches on Gravitation.