Everything in the Universe

year of pub­li­ca­ti­onISBNauthor(s)title
2003978-0-913399-04-0Norman Sperling · David MorrisonWhat Your Astronomy Textbook Won't Tell You: Clear, Savvy Insights for Mastery
2011978-0-913399-12-5Norman SperlingDon't Try This in High School
1991978-0-913399-63-7John L. Dobson · Norman SperlingHow and Why to Make a User-Friendly Sidewalk Telescope
1995978-0-913399-64-4   ''How and Why to Make a User-Friendly Sidewalk Telescope
  ''978-0-913399-65-1   ''How and Why to Make a User-Friendly Sidewalk Telescope