TY  - BOOK
AU  - Nachtnebel, H.P. ed.
TI  - Hydrological basis of ecologically sound management of soil and groundwater
U1  - 556.3:654.195 N11H 
PY  - 1993///
CY  - Paris
PB  - UNESCO/IHP
KW  - Ecologically sound management
ER  -