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Gemstones for everyman
Anderson, B.W.
Bok Engelsk 1976
Gem testing
[by] B.W. Anderson
Bok Engelsk 1971
Gem testing
by B.W. Anderson
Bok Engelsk 1964
Practical gemmology : a study of the identification of gemstones, pearls, and ornamental minerals
Robert Webster ; with a foreword by B.W. ...
Bok Engelsk 1957
Gem testing
B.W. Anderson
Bok Engelsk 1948