Spectroscopy 164 Molecular spectroscopy 143 Spectrum analysis 115 Chemistry 58 Physics 57 Nuclear magnetic resonance spectroscopy 54 Raman spectroscopy 46 Molecular spectroscopy; Nuclear structure; Atomic and Nuclear physics 41 Atomic spectroscopy 36 Chemistry, Analytic 33 Laser spectroscopy 31 Organic compounds 30 Infrared spectroscopy 28 Spectra 26 Analysis 21 Nuclear Magnetic Resonance Spectroscopy 21 FUNDAMENTALS OF MOLECULAR SPECTROSCOPY 19 Fluorescence spectroscopy 18 SPECTROSCOPY 16 ORGANIC SPECTROSCOPY 15 Spectrochemical analysis 15 X-ray spectroscopy 15 Chromatography 14 Molecular structure 14 Spectroscopical analysis 14 Ultraviolet spectroscopy 13 spectroscopy 12 Analytical chemistry 11 Chemistry, Organic 11 Organic chemistry 11