Children's Press,, 2005.
48 p. : ill. (chiefly col.), col. map ; 23 cm.

Walker,, c2004.
48 p. : ill. (chiefly col.), col. map ; 31 cm.

National Geographic,, c2004.
144 p. : ill. (chiefly col.), col. map ; 29 cm.

Scholastic Press,, c2004.
47 p. : col. ill., col. map ; 29 cm.

Atheneum Books for Young Readers,, c2004.
34 p. : col. ill. ; 27x 29 cm.

Facts On File,, c2003.
96 p. : ill. (chiefly col.), col. maps ; 31 cm.

Facts On File,, c2003.
96 p. : ill. (chiefly col.), col. maps ; 31 cm.

Clarion Books,, c2003.
72 p. : col. ill., col. maps ; 27 cm.

Facts on File,, c2003.
96 p. : col. ill., col. maps ; 31 cm.

Facts on File,, c2003.
96 p. : ill. (chiefly col.), col. maps ; 31 cm.