Nébuleuses planétaires
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IC 4997 NGC 6572 Publications Emission Line Catalog for Planetary Nebulae by James B. Kaler, Richard A.Shaw, and Louise Browning (PASP, 109, No. 733, 1997) http://stsdas.stsci.edu/elcat/
IC 4997
NGC 6572
Publications
Emission Line Catalog for Planetary Nebulae by James B. Kaler, Richard A.Shaw, and Louise Browning (PASP, 109, No. 733, 1997) http://stsdas.stsci.edu/elcat/
