Police roadblocks were set up around the country to control internal trade.

Labor was comparatively more expensive, and internal trade far less efficient than in China.

The plan thus represents an important step toward the community's intention of eliminating all barriers to internal trade by 1992.

There is a lot of internal trade within the euro zone.

However, road conditions in the interior and hinterland areas of the kingdom made internal trade difficult.

And governments are trying to hold onto goods, further disrupting internal trade.

Different nations have different methods of handling internal and international trade.

Revealing a company's legal internal trade secrets is not going to be subject to much if any protection in many places.

But of course there is extensive internal and external trade in most forestry products.

All limits have been lowered or already largely removed for internal European trade.