D. Puerto Rico June 1971 casesNielsen v. Veterans Administration of United StatesUnited States v. BlondetHilton Intern. Co. v. Union De Trabajadores De La Industria Gastronomica De Puerto Rico, Local 610, of Hotel, Restaurant, Emp. and Bartenders Intern. Union, AFL CIOViera v. Sanchez-VilellaHernandez v. National Packing Co.Bixler v. Iberia, Liness Aereas De Espana