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The ornamental design for a root barrier, as shown. |
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FIG. 1 is a front perspective of the root barrier;
FIG. 2 is an enlarged, fragmentary perspective view thereof;
FIG. 3 is an enlarged, fragmentary, opposite end perspective view thereof;
FIG. 4 is a top plan view thereof with the bottom plan view being a mirror image;
FIG. 5 is a front view thereof; and,
FIG. 6 is a back view thereof.
Miller, Michael E., McCord, George R.
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