<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 2012) (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 2012) (Learn how and when to remove this template message) </Td> </Tr> <P> A table of contents, usually headed simply Contents and abbreviated informally as TOC, is a list, usually found on a page before the start of a written work, of its chapter or section titles or brief descriptions with their commencing page numbers . </P> <P> Pliny the Elder credits Quintus Valerius Soranus (d . 82 B.C.) as the first author to provide a table of contents to help readers navigate a lengthy work . Pliny's own table of contents for his encyclopedic Historia naturalis ("Natural History") may be viewed online in Latin and in English (following dedication). </P>

When do i need a table of contents