Roger Wetzel (Wetzel, Roger)

German

• 
  Beitrage Zur Petrographie Islands
  by Roger Wetzel
  Hardcover, Birkhauser, ISBN 3764309512 (3-7643-0951-2)

English

• 
  Slurry Trench Construction for Pollution Migration Control
  by Philip Spooner, Roger Wetzel, Constance Spooner, C. Furman
  Hardcover, William Andrew Pub, ISBN 0815510209 (0-8155-1020-9)