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Published online by Cambridge University Press: 04 August 2017
We review the spectral classification work with low dispersion. It is mainly concentrated on the MK-System. First we summarize the original properties of this system, its evolution and its present properties. We describe the MK Process and emphasize its importance as a tool for future research on spectral classification. In the third section we comment briefly about the instrumentation and the techniques used in spectral classification work and finally we mention a list of research programs that can be undertaken with a 1m-telescope and a good spectrograph.