Iau Colloquium 1987 Paris, France) (Iau Colloquium 1987 Paris, France))

• 
  Stargazers: The Contribution of Amateurs to Astronomy/Proceedings of Colloquium 98 of the Iau, June 20-24, 1987
  by Storm Dunlop, M. Gerbaldi, Iau Colloquium 1987 Paris, France)
  Softcover, Springer Verlag, ISBN 0387502300 (0-387-50230-0)