TY  - BOOK
AU  - Mara,Wil
TI  - Environmental protection
T2  - Cornerstones of freedom
SN  - 9780531236031 (library binding)
AV  - TD170.M35  
U1  - 363.70973  
PY  - 2013///
CY  - New York
PB  - Scholastic
KW  - Environmental protection
KW  - United States
KW  - Juvenile literature
KW  - Environmental conditions
N1  - Includes bibliographical references (p. 61) and index
N2  - The relationship between human progress and its effect on the natural environment has long been a contentious issue. This book details the history of the environmental movement in the United States, from its first stirrings in the writings of Henry David Thoreau and George Perkins Marsh to recent debates over climate change and energy sources.
ER  -