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Cover of Proceedings [of the] fourth National Conservation Congress [at] Indianapolis, October 1-4, 1912

Proceedings [of the] fourth National Conservation Congress [at] Indianapolis, October 1-4, 1912

United States. National Conservation Congress

2.8
Cover of Proceedings of the second National Conservation Congress at Saint Paul, September 5-8, 1910

Proceedings of the second National Conservation Congress at Saint Paul, September 5-8, 1910

United States. National Conservation Congress

5.0
Cover of Conservation Reader

Conservation Reader

Harold W. (Harold Wellman) Fairbanks

3.8
Cover of Conservation Through Engineering: Extract from the Annual Report of the Secretary of the Interior

Conservation Through Engineering: Extract from the Annual Report of the Secretary of the Interior

Franklin K. Lane

4.8
Cover of A Review of the Resources and Industries of the State of Washington, 1909

A Review of the Resources and Industries of the State of Washington, 1909

Ithamar M. (Ithamar Martindale) Howell

4.2
Cover of The Holy Earth

The Holy Earth

L. H. (Liberty Hyde) Bailey

3.4
Cover of The Rural Life Problem of the United States: Notes of an Irish Observer

The Rural Life Problem of the United States: Notes of an Irish Observer

Horace Curzon Plunkett

3.5
Cover of Investigation of the Department of the Interior and of the Bureau of Forestry

Investigation of the Department of the Interior and of the Bureau of Forestry

United States. Congress. Joint Committee to Investigate the Interior Department and Forestry Service

2.6

1910