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1.
The Earth as Modified by Human Action [recurso electrónico] / George P. Marsh

by Marsh, George P. (George Perkins), 1801-1882.

Material type: Continuing resource Continuing resource; Format: electronic Publisher: Project Gutenberg, 2004Online access: Click here to access online Availability: No items available :

2.
The Fight for Conservation [recurso electrónico] / Gifford Pinchot

by Pinchot, Gifford, 1865-1946.

Material type: Continuing resource Continuing resource; Format: electronic Publisher: Project Gutenberg, 2004Online access: Click here to access online Availability: No items available :

3.
A Review of the Resources and Industries of the State of Washington, 1909 [recurso electrónico] / Ithamar Howell

by Howell, Ithamar.

Material type: Continuing resource Continuing resource; Format: electronic Publisher: Project Gutenberg, 2005Online access: Click here to access online Availability: No items available :

4.
Checking the Waste : A Study in Conservation [recurso electrónico] / Mary Huston Gregory

by Gregory, Mary Huston.

Material type: Continuing resource Continuing resource; Format: electronic Publisher: Project Gutenberg, 2007Online access: Click here to access online Availability: No items available :

5.
Conservation Reader [recurso electrónico] / Harold W. Fairbanks

by Fairbanks, Harold W. (Harold Wellman), 1860-.

Material type: Continuing resource Continuing resource; Format: electronic Publisher: Project Gutenberg, 2008Online access: Click here to access online Availability: No items available :

6.
The Rural Life Problem of the United States : Notes of an Irish Observer [recurso electrónico] / Horace Curzon, Plunkett

by Plunkett, Horace Curzon, Sir, 1854-1932.

Material type: Continuing resource Continuing resource; Format: electronic Publisher: Project Gutenberg, 2008Online access: Click here to access online Availability: No items available :

7.
Conservation Through Engineering : Extract from the Annual Report of the Secretary of the Interior [recurso electrónico] / Franklin K. Lane

by Lane, Franklin K, 1864-1921.

Material type: Continuing resource Continuing resource; Format: electronic Publisher: Project Gutenberg, 2010Online access: Click here to access online Availability: No items available :

8.
The Holy Earth [recurso electrónico] / L. H. Bailey

by Bailey, L. H. (Liberty Hyde), 1858-1954.

Material type: Continuing resource Continuing resource; Format: electronic Publisher: Project Gutenberg, 2010Online access: Click here to access online Availability: No items available :

9.
Proceedings of the Second National Conservation Congress at Saint Paul, September 5-8, 1910 [recurso electrónico] / United States. National Conservation Congress

by United States. National Conservation Congress.

Material type: Continuing resource Continuing resource; Format: electronic Publisher: Project Gutenberg, 2011Online access: Click here to access online Availability: No items available :

10.
Man and Nature; Or, Physical Geography as Modified by Human Action [recurso electrónico] / George P. Marsh

by Marsh, George P. (George Perkins), 1801-1882.

Material type: Continuing resource Continuing resource; Format: electronic Publisher: Project Gutenberg, 2011Online access: Click here to access online Availability: No items available :

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