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Published online by Cambridge University Press: 12 April 2016
Since 1981, we have been regularly carrying out photoelectric observations of Cepheids. By now nearly 20450 observations in UBVRI have been acquired. These observations are the basis of our Cepheid data base; presently we have collected on magnetic media near 88000 photoelectric as well as near 18000 radial velocity measurements. We shall continue to append to this Cepheid data base our new observations as well as published data.