• publisher: Govt. print. off.
  • creator: Nelson Horatio Darton
  • contributor: unknown library
  • mediatype: texts
  • years: 1887
  • pages: 49
  • language: English
  • lccn: 01019640
  • notes: Continued by the author's "Record of North American Geology 1887-1891."
  • download: pdf file