The use of biotic indices in the ECE standard statistical classification of ecotoxilogical quality of surface freshwater : paper / prepared by the Secretariat.
1991
Detalles de los registros
Signatura[E/ECE/]CES/AC.56/34
TítuloThe use of biotic indices in the ECE standard statistical classification of ecotoxilogical quality of surface freshwater : paper / prepared by the Secretariat.
AutoresUN. ECE. Secretariat
FechaGeneva : UN, 8 Oct. 1991.
Descripción
[1] p.