<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2014) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2014) (Learn how and when to remove this template message) </Td> </Tr> <Table> Charlie and the Great Glass Elevator <Tr> <Td_colspan="2"> Original book cover of Charlie and the Great Glass Elevator with illustrations by Joseph Schindelman </Td> </Tr> <Tr> <Th> Author </Th> <Td> Roald Dahl </Td> </Tr> <Tr> <Th> Illustrator </Th> <Td> Joseph Schindelman (1st US edition) Faith Jaques (1st UK edition) Michael Foreman (2nd edition) Quentin Blake (3rd edition) </Td> </Tr> <Tr> <Th> Country </Th> <Td> United Kingdom </Td> </Tr> <Tr> <Th> Language </Th> <Td> English </Td> </Tr> <Tr> <Th> Genre </Th> <Td> Science fantasy Children's novel </Td> </Tr> <Tr> <Th> Publisher </Th> <Td> Alfred A. Knopf </Td> </Tr> <Tr> <Th> Publication date </Th> <Td> 1972 </Td> </Tr> <Tr> <Th> Media type </Th> <Td> Print (Hardback & Paperback) </Td> </Tr> <Tr> <Th> Pages </Th> <Td> 159 </Td> </Tr> <Tr> <Th> ISBN </Th> <Td> 0 - 394 - 82472 - 5 (first edition, hardback) </Td> </Tr> <Tr> <Th> OCLC </Th> <Td> 314239 </Td> </Tr> <Tr> <Th> LC Class </Th> <Td> PZ7. D1515 Ck3 </Td> </Tr> <Tr> <Th> Preceded by </Th> <Td> Charlie and the Chocolate Factory </Td> </Tr> <Tr> <Th> Followed by </Th> <Td> Charlie in the White House (unfinished) </Td> </Tr> </Table> <Tr> <Td_colspan="2"> Original book cover of Charlie and the Great Glass Elevator with illustrations by Joseph Schindelman </Td> </Tr>

What is the theme of charlie and the great glass elevator