Bookshelf

FIG. 1 is a top, front, right side perspective view of a first embodiment of a bookshelf, showing my design.

FIG. 2 is a bottom, rear, left side perspective view thereof.

FIG. 3 is a front elevation view thereof.

FIG. 4 is a rear elevation view thereof.

FIG. 5 is a left side elevation view thereof.

FIG. 6 is a right side elevation view thereof.

FIG. 7 is a top plan view thereof.

FIG. 8 is a bottom plan view thereof.

FIG. 9 is a top, front, right side perspective view of a second embodiment of a bookshelf, showing my design.

FIG. 10 is a bottom, rear, left side perspective view thereof.

FIG. 11 is a front elevation view thereof.

FIG. 12 is a rear elevation view thereof.

FIG. 13 is a left side elevation view thereof.

FIG. 14 is a right side elevation view thereof.

FIG. 15 is a top plan view thereof.

FIG. 16 is a bottom plan view thereof.

FIG. 17 is a top, front, right side perspective view of a third embodiment of a bookshelf, showing my design.

FIG. 18 is a bottom, rear, left side perspective view thereof.

FIG. 19 is a front elevation view thereof.

FIG. 20 is a rear elevation view thereof.

FIG. 21 is a left side elevation view thereof.

FIG. 22 is a right side elevation view thereof.

FIG. 23 is a top plan view thereof; and,

FIG. 24 is a bottom plan view thereof.

The broken lines depict portions of the bookshelf that form no part of the claimed design.