. The Bulletin of the Beach Erosion Board. Coastal engineering; Shore protection; Beach erosion. FREQUENCY, TYPE 2. STATE OF THE SEA IGURE 20. FREQUENCY OF STATE OF THE SEA AT THE LIGHTSHIP AMRUMBANK IN THE STORMY WINTER OF 1936-37. FREQUENCY, TYPE 2. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Beach Erosion Board; United States. Army. Corps of Engineers. Washington, D. C. : The Board

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