The ISBN of The Half-Made World is 0765325527.
The ISBN of Showboat World is 0515036986.
The ISBN of The Great World is 0701134151.
The ISBN of Bad World is 0970678487.
The ISBN of At the Edge of the World is 0345018796.
The ISBN of World of Ptavvs is 978-0345345080.
The ISBN of The World Is My Home is 978-0812978131.
The ISBN of World Almanac is 978-1600571480.
The ISBN of Wonders of a Godless World is 9781741758092.
The ISBN of The World According to Clarkson is 0141017899.
The ISBN of The World of Tibetan Buddhism is 0861710975.
The ISBN of The Atlas of the Dragonlance World is 0880384484.
The ISBN of The Hotel on the Roof of the World is 9781840241990.