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Birkbeck Faculties and Schools > Faculty of Science > School of Natural Sciences
Crawford, Ian and Williams, D.A. (1997) Detection of interstellar NH towards ζ Ophiuchi by means of ultra-high-resolution spectroscopy. Monthly Notices of the Royal Astronomical Society 291 (3), L53-L56. ISSN 0035-8711.
Oudmaijer, R.D. and Drew, J.E. and Barlow, M.J. and Crawford, Ian and Proga, D. (1997) Helium absorption and emission towards Θ1 Ori C. Monthly Notices of the Royal Astronomical Society 291 (1), pp. 110-120. ISSN 0035-8711.