Symmetry and Group Theory in Chemistry, Unifying Principles, Vibrational Spectroscopy, Infrared Spectroscopy, Raman Spectroscopy, Electronic Spectroscopy, Atomic Spectroscopy, Molecular Spectroscopy, Photoelectron Spectroscopy, Magnetic Resonance Spectroscopy, Nuclear Magnetic Resonance Spectroscopy, Electron Spin REsonance Spectroscopy, S-Ray Diffraction, subject-Index.