Search Results - "Gold mines and mining"
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1
Methods and costs of gravel and placer mining in Alaska
Published: Govt. Print. Off., 1905Description: 5 volumes in 1 : illustrations, plates, maps, diagrams ; 24 cm.Government Document Book -
2
Contributions to Devonian paleontology, 1903
Published: Govt. Print. Off., 1905Description: 5 volumes in 1 : illustrations, plates., maps ; 24 cm.Government Document Book -
3
Limestones of southwestern Pennsylvania
Published: Govt. Print. Off., 1904Description: 7 volumes in 1 : illustrations, plates, maps ; 24 cm.Government Document Book