Henry Erni

Coal Oil and Petroleum: Their Origin, History, Geology, and Chemistry ...

Henry Erni

$24.50

Coal Oil and Petroleum

Henry Erni

Out of Stock

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

Henry Erni

$25.95 - $38.95

Mineralogy Simplified: A Short Method Of Determining And Classifying Minerals, By Means Of Simple Chemical Experiments In The Dry And Wet Way

Henry Erni

Out of Stock

Mineralogy Simplified. Easy Methods of Identifying Minerals, Including Ores, by Means of the Blowpipe, by Flame Reactions, by the Spectroscope, and by Humid Chemical Analysis, Based on Prof. Von Kobel

Henry Erni

Out of Stock

Coal Oil and Petroleum: Their Origin, History, Geology, and Chemistry

Henry Erni

$22.69 - $32.95

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

Henry Erni

$38.95

Mineralogy Simplified: A Short Method Of Determining And Classifying Minerals, By Means Of Simple Chemical Experiments In The Dry And Wet Way

Henry Erni

$22.69

Mineralogy Simplified: A Short Method Of Determining And Classifying Minerals, By Means Of Simple Chemical Experiments In The Dry And Wet Way

Henry Erni

$32.95