"You have to distinguish between text and production," he wrote.

Nearly two years passed between the pilot and production of the series.

"But there is a lag between spending and production, so you don't see it in the numbers right away."

There is a relationship between light, primary production, and ecological energy budgets.

Then there is the underlying gap between production and demand.

This distinction between military and commercial production is itself controversial.

That wasn't the only major change between concept and production.

A separation appeared for the first time between design and production.

However, in the energy trade, the distinction between production and services is not always clear.

However, the difference between production, trade and consumption also plays a major role.