The ornamental design for a book, as shown and described.
FIG. 1 is a perspective view of a book according to an embodiment of the invention, with elements in dashed lines forming no part of the claimed design.
FIG. 2 is a front view of a book according to an embodiment of the invention, with elements in dashed lines forming no part of the claimed design.
FIG. 3 is a back view of a book according to an embodiment of the invention, with elements in dashed lines forming no part of the claimed design.
FIG. 4 is a right side view of a book according to an embodiment of the invention, with elements in dashed lines forming no part of the claimed design.
FIG. 5 is a left side view of a book according to an embodiment of the invention, with elements in dashed lines forming no part of the claimed design.
FIG. 6 is a top view of a book according to an embodiment of the invention, with elements in dashed lines forming no part of the claimed design.
FIG. 7 is a bottom view of a book according to an embodiment of the invention, with elements in dashed lines forming no part of the claimed design; and,
FIG. 8 is a perspective view of a book in an open position according to an embodiment of the invention, with elements in dashed lines forming no part of the claimed design.