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I'm trying to remember the author and title of a book I read 30 years ago or so, about a race of insectoid aliens and their journey from pre-space-age, to being able to travel between the stars. Kind of a Foundation-scale scope, but just a single book. The perspective jumps by generations throughout the history of this civilization.
I thought it was Brin, or Saberhagen, or Pohl, but I've not been able to find the book listed in any of their bibliographies.
Ring any bells?