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Releases by Henry Erni

Cover for Henry Erni · Mineralogy Simplified (Book) (2022)

Mineralogy Simplified (2022)

Cover for Henry Erni · Coal Oil and Petroleum (Book) (2022)

Coal Oil and Petroleum (2022)

Cover for Henry Erni · 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 (Classic Reprint) (Paperback Book) (2018)

Mineralogy Simplified: Easy Meth... (2018)

Cover for Henry Erni · 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 (Classic Reprint) (Hardcover Book) (2018)

Mineralogy Simplified: Easy Meth... (2018)

Cover for Henry Erni · Mineralogy Simplified (Hardcover Book) (2018)

Mineralogy Simplified (2018)

Cover for Henry Erni · Mineralogy Simplified (Paperback Book) (2018)

Mineralogy Simplified (2018)

Cover for Henry Erni · Coal Oil and Petroleum Their Origin, History, Geology, and Chemistry (Paperback Book) (2018)

Coal Oil and Petroleum Their Ori... (2018)

Cover for Henry Erni · Mineralogy Simplified : Easy Methods Of Identifying Minerals, Including Ores, By Means Of The Blowpipe, By Flame Reactions, By The Spectroscope, And By ... For The Determination Of Minerals. With (Paperback Book) (2018)

Mineralogy Simplified : Easy Met... (2018)

Cover for Henry Erni · Coal Oil and Petroleum (Paperback Book) (2018)

Coal Oil and Petroleum (2018)

Cover for Henry Erni · Coal, Oil and Petroleum (Paperback Book) (2017)

Coal, Oil and Petroleum (2017)