To each of you I wish to acknowledge your invaluable contribution.

He had not, of course, noticed her small but invaluable contributions to the household expenses.

The club has also made invaluable contributions to the school and surrounding community.

Each year the center honors Americans "for the invaluable contributions they have made to the cultural life of our nation."

Here again, the design process has made an invaluable contribution to New York architecture.

Russell Banks has called the film "an invaluable contribution to our literature."

We also make an invaluable contribution by an economical impact upon the life of our community.

Let me also extend my thanks to the staff of the secretariats for their invaluable contribution.

From the perspective of the country, it is an invaluable contribution to the development and science.

An invaluable contribution to the field of children and the media.