2 Titles for Hartert, Ernst

• 
   The document is publicly available on the WWW

  Katalog der Bibliothek

  Deutsche Geologische Gesellschaft (Ed.)

  Stuttgart : Enke, 1930
• 
   The document is publicly available on the WWW

  Otis (1994) Band 2 Heft 1

  Potsdam : ABBO, 1.1993 -, 1993-