Gem testing

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• 责任者：Anderson ; B.W.
• 责任方式：Written
• 出版者：Emerson Book Inc.
• 出版年：1948
• 出版地：New York
• 出版日期：1948/1/1 0:00:00
• 价格：0
• 分类号：340
• 语言：English

摘要

THE PREVIOUS editions of Gem Testing have been very well received and the book seems to have fulfilled its purpose of pro- viding a simple yet detailed manual for jewelers and others who are interested in the identification of gem stones.