Col Reference --- --------- R1 Pismis P. 1970, Bol. Obs. Tonantzintla Tacubaya 35,293 R2 Vogt N., Moffat A.F.J. 1972, Astron. Astrophys. Suppl. 7, 133 Back to the form
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R1 Pismis P. 1970, Bol. Obs. Tonantzintla Tacubaya 35,293
R2 Vogt N., Moffat A.F.J. 1972, Astron. Astrophys. Suppl. 7, 133