Thus, the great river system is at the same time the country's principal resource and its greatest hazard.

List principal resources of the subdivision, each under a separate subsection.

And in vegetation the precious woods are the principal resources.

Pakistan's principal natural resources are arable land and water.

Wine, oysters and potatoes are now the island's principal resources.

Today, Hard clams are the bay's principal resource, but this was not always the case.

The principal resources, both for the spacecraft and for the operations team, will be devoted to the higher priority science.

The principal natural resource, aside from minerals, are the forests, being present on 68% of the territory.

Energy is both nature's and our own principal resource for making things happen.

Uruguay's principal natural resource is its rich, black soil.