LCC (Clas. Bibl. Congrés EUA)KF5505-5510
K. Law
⮑ KF. Law of the United States
⮑ KF1-9827. Law of the United States (Federal)
⮑ KF5500-5865. Public property. Public restraints on private property
⮑ KF5505-5510. Conservation of natural resources