US D636197 S1
The ornamental design for a shelving system, as shown and described.
FIG. 1 is a front elevation view of a shelving system showing my new design;
FIG. 2 is a rear elevation view thereof;
FIG. 3 is an enlarged right side elevation view thereof, the left said elevation view being a mirror image;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is a perspective view thereof.
The broken line showing of the shelves is for the purpose of illustrating environmental structure and forms no part of the claimed design