Bibcode
                                    
                            White, G. J.; Watt, G. D.; Beckman, J. E.; Rose, W. B.; van Vliet, A. H. F.
    Bibliographical reference
                                    Astronomy and Astrophysics, vol. 84, no. 1-2, Apr. 1980, p. 212-215. Research supported by the Science Research Council.
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                        4
            
                        1980
            
  Journal
                                    
                            Citations
                                    8
                            Refereed citations
                                    8
                            Description
                                    Observations are reported of the J = 2 → 1 transitions of CO and
12C18O at 230 and 219 GHz respectively from a
number of galactic sources. A map of the central 1/2° ×
1/2° of the Orion A molecular cloud is presented. The spectra are
interpreted to derive molecular densities and abundance ratios in the
molecular clouds observed.