It is well-known that the principal area of our difference in recent years has been over human rights questions.

The green, as opposed to the rough, is the principal area of concern.

But the chef-lieu can also mean the principal area within a town.

The preserved counties and principal areas affected are given below.

The various types corresponded to western Europe's principal economic areas.

His principal area of interest lies in the social sectors.

The council of a principal area that has been granted city status.

These represent the principal areas of collaboration among its member universities.

Education and employment are the principal areas from an investment point of view.

Wheat and other grains are the principal areas of production.