Echt oder synthetisch? /

類似資料

• Gem testing /
  著者:: Anderson, B. W. (Basil William), 1901-
  出版事項: (1971)
• Gemstones /
  著者:: O'Neil, Paul, 1909-
  出版事項: (1984)
• A guide to the collection of gemstones in the Geological Museum (Museum of Practical Geology)
  出版事項: (1951)
• GEMSTONES OF VICTORIA: HOW AND WHERE TO FIND THEM / DERRICK STONE.
  著者:: STONE, DERRICK I.
• The Australian gemhunter's guide /
  著者:: Buchester, K. J.
  出版事項: (1965)