• publisher: Washington : G.P.O.
  • creator: Walcott, Charles D. (Charles Doolittle), 1850-1927 United States. Geological Survey
  • contributor: 1 United States. Geological Surve
  • Keyword: Paleontology Cambrian. Arthropoda, Fossil Canada. Arthropoda, Fossil United States. Pal芒eontologie Cambrien 6 Arthropodes fossiles Canada 6 Arthropodes fossiles 芒Etats-Uni
  • years: 1886.
  • pages: 5 microfiches (199 fr.) :
  • isbn: 0665147473
  • notes: At head of title: United States Geological Survey.
  • download: pdf file