"Natural resources United States Cases." . . "Natural resources Law and legislation United States Cases." . . . "Cases and materials on the law of natural resources"@en . "Cases and materials on the law of natural resources" . . . . . "Trials, litigation, etc"@en . "Trials, litigation, etc" . . . . . . . . . . . . . . "Ressources naturelles Droit Etats-Unis Jurisprudence." . . "United States." . . "Natural resources Law and legislation." . . . .