It quickly advanced to become a primary contributor of Egyptian revolution-related news.

As a primary contributor to mental health law reform, she led the way towards humane treatment of patients with behavior and personality disorders.

The primary contributor to litter in Tennessee is discarded bottles and cans.

The primary contributor of non-government aid was the Red Cross.

You know, as I do, that we have worked on this area, and this House was a primary contributor.

I See Stars is often recognized as a primary contributor of the style.

He was a primary contributor to the building of a first-class baseball field for the Varsity team there.

I believe the following factors are the primary contributors:

Both concrete and asphalt are the primary contributors to what is known as the urban heat island effect.

Concrete is a primary contributor to the urban heat island effect, though less so than asphalt.