11.  ...his extensive use of archival material.

12.  Extensive use of the computer in project work opens up the further possibility of a computer-oriented career.

13.  The methods used in statistics depend on many branches of mathematics and their implementation requires extensive use of computers but the subject has its own logical concepts and theory.

14.  The excess mortality was attributed to coal mining and the extensive use of soft coal in the mining areas.

15.  In the seventeenth century the new Dutch republic was the only important power to make extensive use of this method of representation.

16.  Environmentalists have joined with racing enthusiasts and the Utah Film Commission, which makes extensive use of the flats, in an unusual alliance aimed at their preservation.

17.  Extensive use of agricultural chemicals has driven out many animal and plant species.

18.  The IPE, for example, makes extensive use of EFPs.

19.  It makes extensive use of CLI commands.

20.  This dictated the extensive use of in-depth interviews.