TY  - BOOK
AU  - Chiras, D.D.  .
TI  - Environmental science / 
SN  - 0-7637-0860-7
U1  - G:55 
PY  - 2006///
CY  - Sudbury : 
PB  - Jones and Bartlett Publishers , 
KW  - Biology-environmental science
ER  -