Conservation and the Gospel of efficiency : the progressive conservation movement, 1890-1920 /
Autor principal: | Hays, Samuel Pfrimmer 1921-2017 (Autor/a) |
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Formato: | Libro |
Lenguaje: | English |
Publicado: |
Pittsburgh :
University of Pittsburg Press,
c1959.
|
Materias: |
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