Observations of the 89-GHZ Transition of HCO+ in Orion Batchelor, R. A. ; McCulloch, M. G. ; Whiteoak, J. B. Abstract Publication: Publications of the Astronomical Society of Australia Pub Date: 1980 DOI: 10.1017/S1323358000018956 Bibcode: 1980PASA....4...98B