TY  - BOOK
AU  - El-Hinnawi, Essam
AU  - Overbey, J. W. II
AU  - Greeley, R. S.
TI  - The state of the environment
SN  - 0408021837
U1  - 363.7 ELH 
PY  - 1987///
CY  - London
PB  - Butterworth Scientific
KW  -  
KW  - Electronic data processing - Environmental protection
ER  -