TY  - BOOK
ED  - H. John Heinz III Center for Science, Economics, and the Environment
TI  - The state of the nation’s ecosystems: measuring the lands, waters, and living resources of the United States 
SN  - 9780521525725 (pbk. : alk. paper)
PY  - 2002///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Environmental monitoring
KW  - United States
KW  - Methodology
KW  - Ecosystem health
N1  - Includes bibliographical references
ER  -