D. Puerto Rico February 1972 casesHilton Intern. Co. v. SanchezHernández v. Secretary of Health, Education and WelfareFelix v. Victory Carriers, Inc.De Fortuno v. Pueblo Intern., Inc.Montañez v. Colegio de Tecnicos de Refrigeración y Aire Acondicionado de Puerto RicoGonzalez v. Secretary of Health, Ed. and WelfareRabazza v. Seafarers Intern. Union of North AmericaInternational Bank of Miami v. Banco de Economias y Prestamosde Leon v. Secretary of Health, Education and WelfareRamirez Alvarado v. Saxby