TY  - BOOK
AU  - Keller,Edward A.
TI  -  Introduction to Environmental Geology
SN  - 0023632909
U1  - 550 
PY  - 1999///
CY  - New Delhi: 
PB  - Prentice Hall, 
KW  -                       Environmental Geology
KW  - Earth Science
KW  - Energy Resources
KW  - Mineral Resources
ER  -