TY  - BOOK
T1  - Environmental geology /
DA  - c1985.
CY  - Columbus :
AU  - Keller, Edward A.,
AU  - Burt, E. M.
ET  - 4th ed.
CN  - QE33
CN  - QE33
PB  - C.E. Merrill Pub. Co.,
PP  - Columbus :
PY  - c1985.
ID  - 114496
KW  - Geology.
KW  - Environmental protection.
SN  - 0675203732
TI  - Environmental geology /
ER  -