26.
Methods And Costs Of Gravel And Placer Mining In Alaska
by Chester Wells Purington
ISBN: 9781377172392
List Price: $17.95
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Mine Sampling and Valuing; a Discussion of the Methods Used in Sampling and Valuing ore Depo...
by Purington, Chester Wells, C...
ISBN: 9781375965361
List Price: $13.95
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Mine Sampling and Valuing; A Discussion of the Methods Used in Sampling and Valuing Ore Depo...
by Chester Wells Purington, C ...
ISBN: 9780342790111
List Price: $23.95
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Mine Sampling and Valuing; a Discussion of the Methods Used in Sampling and Valuing Ore Depo...
by Purington, Chester Wells, H...
ISBN: 9780342790104
List Price: $13.95
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Methods and Costs of Gravel and Placer Mining in Alaska (Classic Reprint)
by Purington, Chester Wells
ISBN: 9780266850366
List Price: $32.41
31.
Methods and Costs of Gravel and Placer Mining in Alaska (Classic Reprint)
by Purington, Chester Wells
ISBN: 9781527796898
List Price: $16.57
32.
Sluicing at the Kolchan Mines, East Siberia
by Chester Wells Purington
ISBN: 9781359285379
List Price: $19.95
33.
Methods and Costs of Gravel and Placer Mining in Alaska
by Purington, Chester Wells
ISBN: 9781020115325
34.
Methods and Costs of Gravel and Placer Mining in Alaska
by Purington, Chester Wells
ISBN: 9781021590596