And it will remain that way: the surrounding land was sold to a local farmer in the 1950s with a clause prohibiting development.

But it does not prohibit research and development of defensive measures against biological agents.

A neighboring property has an agricultural lease that prohibits development.

Legislation was introduced in the House this week to turn the entire refuge into a protected wilderness area, which would prohibit economic development there.

It prohibited any research and development that could lead to the production a low-yield nuclear weapon.

This plan prohibited future high-rise development in the center of downtown.

By this time France's own demands for rearmament prohibited further development, however.

A restrictive easement has been placed on the land, prohibiting further development.

National planning regulations are applied by the local council, prohibiting "excess" development of family housing.

Buffer zones to protect the water supply should prohibit such development.