TY  - BOOK
AU  - Howell,D.L.
AU  - Boon,P.J.
ED  - Scottish Natural Heritage.
ED  - Scottish Natural Heritage Conference
TI  - Freshwater quality: defining the indefinable? 
SN  - 0114952701
PY  - 1997///
CY  - Edinburgh
PB  - HMSO
KW  - Water
KW  - Analysis
KW  - Water quality
KW  - Measurement
KW  - Water quality management
ER  -