TY  - GEN
AU  - Williams, Roy H. 
TI  - Earth science
SN  - 9781926692579
U1  - 550 WIL  
PY  - 2012///
CY  - New Delhi : 
PB  - Apple Academic Press, 
KW  - Ground water
KW  - Ecosystem
KW  - Remote sensing
N1  - Include index
ER  -