TY  - BOOK
AU  - Ravera,O.
ED  - Commissions of the European Communities
TI  - Biological aspects of freshwater pollution: proceedings of the Course held at the Joint Research Centre of the Commission of the European Communities, Ispra, Italy, 5-9 June 1978 
SN  - 0080234429
PY  - 1979///
CY  - Oxford
PB  - Pergamon Press
KW  - Water
KW  - Pollution
KW  - Freshwater ecology
ER  -