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A. J. Leary

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Leaching Gold and Silver Ores
Leaching Gold and Silver Ores The Plattner and Kiss Processes. a Practical Treatise
Exact Astronomy A Dynamical Solution of the Fundamental Problems of Mathematical Astronomy
Leaching Gold and Silver Ores The Plattner and Kiss Processes. a Practical Treatise
Leaching Gold and Silver Ores
Roasting of Gold and Silver Ores, and the Extraction of Their Respective Metals Without Quicksilver