TY  - GEN
AU  - Perks, A.
AU  - Solley, W.
TI  - Methods for assessing trends in water demands and use for hydrological Services
T2  - WMO/Technical Reports in Hydrology and water resources
VL  - 63
PY  - 1998///
CY  - Geneva
PB  - WMO
KW  - HIDROLOGIA
KW  - IM
ER  -