Spectrum analysis 185 Chemistry, Analytic 23 Molecular spectroscopy 17 Organic compounds 15 Analysis 11 Spectrum Analysis 8 Chemistry, Organic 7 Chemistry, Organic-Spectra 7 Dissertations, Academic (Ph.D) 7 SCIENCE / Spectroscopy & Spectrum Analysis 7 Thesis (Ph.D)-Physics 7 Nuclear magnetic resonance spectroscopy 6 Mass spectrometry 5 Physical chemistry 5 spectrum analysis 5 American poetry 4 Atomic spectroscopy 4 Infrared spectroscopy 4 Organic chemistry 4 Raman spectroscopy 4 Spectra 4 Spectroscopy 4 X-ray spectroscopy 4 catalysis 4 solutions 4 Absorption spectra 3 Catalysis 3 Electronics 3 Fluorescence spectroscopy 3 Lasers 3