Clasificación de la Biblioteca del CongresoKF889.85
K. Law
⮑ KF. Law of the United States
⮑ KF1-9827. Law of the United States (Federal)
⮑ KF801-1241. Contracts
⮑ KF871-1241. Particular contracts
⮑ KF871-890. Comprehensive. Commercial law. Mercantile