FIG. 1 is a top, front, left side perspective view of a first embodiment of a shelf showing my new design;
FIG. 2 is a bottom, rear, right side perspective view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a front elevational view thereof;
FIG. 6 is a rear elevational view thereof;
FIG. 7 is a right side elevational view thereof;
FIG. 8 is a left side elevational view thereof;
FIG. 9 is a top, front, left side perspective view of a second embodiment of a shelf showing my new design, the front, right and left side elevational views being the same as shown in FIGS. 5, 7 and 8, respectively;
FIG. 10 is a bottom, rear, right side perspective view thereof;
FIG. 11 is a top, front, left side perspective view of the first embodiment of the shelf showing indeterminate width of the shelf; and,
FIG. 12 is a bottom, rear, right side perspective view thereof.