List of open star clusters in emission nebulae
Pavel Mayer (1964)
Acta Universitatis Carolinae. Mathematica et Physica
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List of open star clusters in emission nebulae
Fundamental astrometry - Its Present State and Future Prospects
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A note on the accuracy of photographic photometry with Schmidt telescope
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Observations of the Sun, Mercury and Venus in Both coordinates, Made With the Large Meridian Circle of Belgrade Observatory
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