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A few years ago the practice and application of carbon-l 3 nuclear magnetic resonance spectroscopy was restricted to a handful of laboratories, and a search of the 13 C n. m. I. literature was a relatively simple and straight- forward matter. Then, with the development of commercial Fourier transform n. m. I. spectrometers, the technique became generally available and 13 C n. m. I. applications rapidly became routine, with the result that the 13 C literature seems to be following an exponential growth pattern. Consequently a search of the literature has become a formidable task. Although during this period several monographs and reviews of the chemical applications of 13 C n. m. I. have appeared and some of these present extensive tabulations of data, these data tend to be illustrative rather than exhaustive. There is a real need for a systematic, regularly appearing collection of data to enable one to locate the results for specific compounds quickly and easily. This is the first volume of a continuing series that will serve to fill this need. It should prove extremely valuable as the 13 C n. m. I. literature continues its explosive growth, since I J C spectra now rival proton spectra as a primary means for the characterization and identification of a wide variety of compounds.