Edward N Kent grāmatas
Instructions for Collecting, Testing, Melting and Assaying Gold: With a Description of the Process for Distinguishing Native Gold from the Worthless Ores Which Are Found in the Same Locality and the Chemical Tests and Necessary Apparatus to Be Used...
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Instructions for Collecting, Testing, Melting and Assaying Gold, With a Description of the Process for Distinguishing Native Gold ... for use of Persons who are About to Visit the Gold Region of California
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Instructions for Collecting, Testing, Melting and Assaying Gold, With a Description of the Process for Distinguishing Native Gold ... for use of Perso
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Descriptive Catalogue Of Chemical Apparatus, Chemicals And Pure Reagents...
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