This exhibition is installed almost entirely in chronological or thematic groups.

This platform aims to encourage researchers to build contacts and create thematic working groups.

Or on the radio stations that play thematic groups of songs.

The second thematic group is about public life in Pella.

The fourth thematic group is the findings from the city's cemeteries.

A further six thematic groups of entries will appear progressively - roughly one a year until 2013.

But the payoff of the tempo comes later, in the second thematic group.

Close cooperation between the Sections takes place through various thematic groups.

Moreover, the thematic working group on maths, science and technology has already been established.

The photographs have been organised into thematic groups, such as animals, love, and transport.