The production of conifer litter, which is base-poor, also contributes to increased acidity.

I don't know what yet another staid production of Shakespeare could possibly contribute to the theatrical canon.

The production of its mines in Mali contributed 8 percent to the company's overall production in 2008.

The productions contributed at least $5 billion to the city's economy, and parking production assistants played a small but essential role in that effort.

There is evidence to indicate that the production of this valuable commodity directly contributed to the rapid growth of the society.

The overall design and production of the book contribute to the reading experience as well.

These productions will contribute to a further $17.1 million economic impact on the state.

Some productions contribute to the upkeep and renovation of the mansion.

In addition the production of cherries, damsons, and apples contribute significantly to the economy.

The production of a minimum amount of coal contributes to our energy security and prevents us from being dependent on imports.