The nation's greatest concentration was in Boston harbor, at 17,105 parts per billion, the study said.

The greatest concentration were in what is now the village centre.

They had turned to cross the greatest concentration of heat sources, crossing the area from south to north.

Among them, the greatest concentration was in children under 5 and men 55 to 64.

He nodded at the young man who opened the door and swept past him toward the greatest concentration of sound.

Where in a normal city would you find the greatest concentration of treasure?

It will be the greatest concentration of artillery ever fired.

The greatest concentration of animals was found in waters that were about 50 to 68 degrees.

Thus Hitler called for the greatest possible concentration of air power to support the operation.

It is the greatest concentration of his buildings in the world.