TY  - GEN
AU  -  Hays, Samuel P.
ED  -  American Council of Learned Societies.
TI  -  Conservation and the gospel of efficiency: the progressive conservation movement, 1890-1920 
PY  - 1999///
CY  -  Pittsburgh, Pa.
PB  -  University of Pittsburgh Press
KW  -  Conservation of natural resources
KW  -  United States
KW  -  History
KW  -  Environmental policy
N1  -  Includes bibliographical references (p. 277-282) and index;  Electronic text and image data;  Ann Arbor, Mich.;  University of Michigan, Michigan Publishing;  2013;  Includes both TIFF files and keyword searchable text;  ([ACLS Humanities E-Book]);  Mode of a ccess: Intranet
UR  -  htt p://hdl.handle.net/2027/heb.05531
ER  -