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Books by Henry Erni

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2 books found
Mineralogy Simplified: Easy Methods of Identifying Minerals, Including Ores, by Means of the Blow-Pipe, by Flame Reactions, by Humid Chemical Analysis, and by Physical Tests
Mineralogy Simplified: Easy Methods of Identifying Minerals…
By: Henry Erni
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Coal Oil and Petroleum: Their Origin, History, Geology, and Chemistry ...
Coal Oil and Petroleum: Their Origin, History, Geology, and…
By: Henry Erni
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