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Hydrobiolog
The sandy shore of the lake, dry trees on the sand, the ecology of fresh water. Indiana Dunes National Lakeshore
The sandy shore of the lake, dry trees on the sand, the ecology of fresh water. Indiana Dunes National Lakeshore
Hydrobiolog
Plant with smoking pipes on the shore of the lake, pollution of the environment, ecology. Indiana Dunes National Lakeshore
Plant with smoking pipes on the shore of the lake, pollution of the environment, ecology. Indiana Dunes National Lakeshore