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Marking articles made of karat gold
Standard covers marking of articles offered for sale in United States; definitions; requirements for quality marks; general requirements; certification. (5¢)
Marking articles made of karat gold
Standard covers marking of articles offered for sale in United States; definitions; requirements for quality marks; general requirements; certification. (5¢)
Marking articles made of karat gold
U S Nat Bur Standards -- Commercial Standard
1938
11 pages
Standard
Englisch
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