Over 30,000 children under 5 die of preventable causes every day; contaminated water is a principal contributor.

In 1959, Charles Haines, a principal contributor to the firm's design work for research facilities, became a partner.

Mr. Cossitt was identified with it for a few months, and a principal contributor to its columns.

He was the principal contributor to the publication, averaging over 10,000 words a week.

Productivity is the principal contributor to economic growth.

He is, if not the mainstay, at any rate the principal contributor to the present exhibition.

But, despite the technology, cars will still continue to be one of the principal contributors to air pollution.

Zanni contributes to the plot by being the "principal contributor to any confusion".

The private commercial and agricultural sectors remain the principal contributors to growth.

In the current economic environment, America's defense spending is a principal contributor to its growing budget deficits.