Contributions to economic geology, 1910, Part I, Metals and nonmetals except fuels--Introduction
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| Description | scholarly article by C. Willard Hayes published in January 1911 |
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| Publication date | 1911 |
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| Copyright status |
public domain in countries with 70 years pma or shorter. public domain in United States. |
| Missing/wrong data? | Edit Wikidata item |