American Mineralogist, vol.56, (1-12)

Eitemau Tebyg

• American Mineralogist, vol.35, (1-12)
  gan: U.S. Geological Survey, U.S.A
  Cyhoeddwyd: (1950)
• American Mineralogist, vol.36, (1-12)
  gan: U.S. Geological Survey, U.S.A
  Cyhoeddwyd: (1951)
• American Mineralogist, vol.38, (1-12)
  gan: U.S. Geological Survey, U.S.A
  Cyhoeddwyd: (1953)
• American Mineralogist, vol.40, (1-12)
  gan: U.S. Geological Survey, U.S.A
  Cyhoeddwyd: (1955)
• American Mineralogist, vol.41, (1-12)
  gan: U.S. Geological Survey, U.S.A
  Cyhoeddwyd: (1956)