In certain cases the archives hold more extensive materials.

Both jobs provided Perl with access to extensive classified materials.

There are two theaters and a reference library with extensive material on independent film and video.

Critiques have also noted that extensive material flows occur in natural processes.

They use a specially constructed teaching program supported by extensive material and computer-based resources.

Only two sculptors have left extensive written material detailing the practice of their art.

The book and the article on which it was based contained extensive statistical material on Russia's economic development.

She did not want to do extensive comic material, just short introductions.

Note: this annual review contains extensive material on deaf education worldwide.

The report often avoided direct criticism of the Swiss banks but included extensive material raising questions about their actions.