TY  - BOOK
AU  - Opie,John
TI  - Nature's nation: an environmental history of the United States 
SN  - 0155002198
PY  - 1998///
CY  - Fort Worth
PB  - Harcourt Brace College Publishers
KW  - Environmental policy
KW  - United States
KW  - History
KW  - Environmental conditions
N1  - Includes bibliographical references and index
ER  -