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Ecology
England
5
Fisheries
5
Limnology
5
Salmo salar
Salmo trutta
5
River fisheries
4
Rivers
4
Electric fishing
3
Fishery surveys
3
Salmon fisheries
3
Distribution
2
Population number
2
Ribble Catchment
2
Stocking density
2
Wyre Catchment
2
Angling
1
Biomass
1
Catchment area
1
Fish surveys
1
Fishery management
1
Fishways
1
Freshwater fish
1
Fry
1
Gravel
1
Length frequency
1
Lune Catchment
1
Migratory species
1
Salmonid fisheries
1
Scale reading
1
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