30250
Original:
6x7 cm. Slidefilm
Keywords
Algae
Algae
Algal blooms
April
Elværksø
May
Pollution
Skjernå
Water pollution
Categories
POLLUTION, CONTROL etc.
Water pollution
PLANTS I (Algae - Bog Myrtle)
Algae
LAKES AND BOGS - Jutland
Lake Elvaerk before and after Embankment destroyed
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