TY  - BOOK
AU  - Cunningham, William P
AU  - Cunningham, Mary Ann
TI  - Principles of environmental science: inquiry and applications 
SN  - 0070647720
U1  - 363.7  
CY  - New Delhi
PB  - Tata McGraw-Hill Publishing
KW  - Environmental sciences
N1  - Includes index
ER  -