The pillbox had a concrete ribbon of road leading down an incline into it.

The sun was going down, the concrete ribbons of expressways that sliced through the city were jammed with cars.

A short while later they sighted a double concrete ribbon curving up the side of a distant hill.

The concrete ribbon winding down the grade from the west was alive with them.

The pilot pointed down at a concrete ribbon below.

The concrete ribbons ate up the landscape and penetrated to the most secret places.

Off to one side lay the concrete ribbon of US 51.

The fighters were hovering above him, shining their landing lights on the concrete ribbon 1.5 miles long by 200 feet wide.

It sped out that long white concrete ribbon, and the desert was abruptly all around them.