dc:Title
The title of publication. This tag is required and you can add additional titles. 

Note: subtitles are not supported on the cover page, but are supported on the cover image page and on any half-title.

attributes

id
Provides an element with a unique name within a single document. This is especially useful in works with extensive cross-referencing and linking, such as dictionaries, encyclopedias, or travel guides. Use of ids simplifies linking and updates.
xml:lang
xml language code.
xmlns:dc
Always equal to "http://purl.org/dc/elements/1.0/"

Sample:

<dc:Title>Guns of Avalon</dc:Title>

See also:

<dc-metadata>