TY  - BOOK
AU  - Cunningham,William P.
AU  - Cunningham,Mary Ann
TI  - Principles of environmental science: inquiry and applications 
SN  - 0072823399
PY  - 2006///
CY  - Boston
PB  - McGraw-Hill
KW  - Environmental sciences
N1  - Includes bibliographical references and index
ER  -