| http://www.w3.org/ns/prov#value | - BRIEF DESCRIPTION OF THE DRAWINGS FIG. I is a perspective view of a number of the panel structures connected end to end and floating on a body of water to define a continuous vertically extending wall that serves to maintain an oil slick within the confines thereof; FIG. 2 is a fragmentary longitudinal cross sectional view of one of the panel structures taken on the line 2-2 of FIG. 1, illustratin
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