Sentence examples for proved a valuable source from inspiring English sources

He also made important reforms in the Roman Catholic liturgy and left more than 300 Latin letters that have proved a valuable source on the history of his time.

Wood proved a valuable source here, too.

Despite the limitations of the reviewed articles, they proved a valuable source of evidence of needs felt and expressed by people with CFS/ME.

The district nurses and staff of the local Health Centre proved a valuable source of information tracking down each one of the members of the initial population.

Organ retrieval from uncontrolled NHBD may prove a valuable source of organs and is part of the answer to counter organ shortage, especially for the kidney.

Nevertheless, ecotourism can prove a valuable source of income for local communities and hence an economic incentive to conserve remaining forests.

He proved a valuable addition.

For that, the Internet has proved a valuable tool.

"His loan spell proved a valuable experience," said Pressley.

Therefore, our system proved a valuable molecular tool for inducing controlled apoptosis in selected cells.

This treatise proved to be a valuable source of information regarding early techniques used in performance on woodwinds, such as tonguing and ornamentation.