Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleOptical Observations on Satellites and the British Prediction Service.AuthorsHOPKINS, H. G.PublicationNature, 1964, Vol 202, Issue 4934, p743ISSN0028-0836Publication typeArticleDOI10.1038/202743a0