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J/ApJS/249/6
  Galactic interstellar ratio 18O/17O. I. (Zhang+, 2020)
img(gal)
    J/ApJS/249/6/sources(c)List of sources observed by ARO 12m and IRAM 30m telescopes; table added by CDS (286 rows)
    J/ApJS/249/6/table1(c)Isotopic ratios of large sample of molecular clouds (626 rows)
    J/ApJS/249/6/table2Comparisons of ARO 12m and IRAM 30m observation results for 7 sources with both C18O and C17O detections (28 rows)

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       (c)  indicates tables which contain celestial coordinates 
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