Theodore Roosevelt, conservation, and the 1908 Governors' Conference /Author: Dorsey, Leroy G.,
Publisher: College Station : Texas A&M University Press,
Date: [2016] This title can be found in 2 Iowa libraries.
Saving the planet : the American response to the environment in the twentieth century /Author: Rothman, Hal K.
Publisher: Chicago : Ivan R. Dee,
Date: c2000. This title can be found in 8 Iowa libraries.
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