Lihat Juga

• The Age of the principal Lake-Basins between the Jura and the Alps
  oleh: Du Riche Preller, C. S.
  Terbitan: (1904)
• IV.—The Moraine Walls and Lake Basins of Northern Italy
  oleh: Preller, C. S. Du Riche
  Terbitan: (1915)
• III.—The Contact-Zone of the Alps and the Apennines in Western Liguria
  oleh: Preller, C. S. Du Riche
  Terbitan: (1916)
• III.—Notes on some Fossil Arthropods from the Carboniferous Rocks of Cape Breton, Nova Scotia, Received from Dr. H. M. Ami, M.a., F.g.s., F.r.s. (Can.)
  oleh: Woodward, Henry
  Terbitan: (1918)
• Synchronous Age of the Grays and Erith Brickerths
  oleh: Wood, Searles V.
  Terbitan: (1868)