Pond and waterfall Location: Winkler Botanical Preserve, Alexandria, VA Year: 2011 Merckdigitals catalogue number: 06-77525 Comments:

Pedalfer soil profile in stream cutbank Location: Winkler Botanical Preserve, Alexandria, VA Year: 2011 Merckdigitals catalogue number: 06-77499 Comments:

Pedalfer soil profile in stream cutbank (detail of above) Location: Winkler Botanical Preserve, Alexandria, VA Year: 2011 Merckdigitals catalogue number: 06-77499 Comments:

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