This book is a worthwhile contribution to a poorly represented area.

Are they making some kind of worthwhile contribution to society?

And I would always rather do something that makes a worthwhile contribution to society.

"America can only make a worthwhile contribution to that future by being itself."

That's been the history of anybody who's had a worthwhile contribution.

The job must make a worthwhile contribution to corporate or work objectives.

Yes, and that is a worthwhile contribution, but he should learn some other skills.

The organization is intended to make a worthwhile contribution to economic growth in Africa.

This report could make a worthwhile contribution to that effect.

The text before us is a very worthwhile contribution to the future development of rural areas.