D. Puerto Rico January 1973 casesBurgos v. Secretary of Health, Education and WelfarePressure Clean, Inc. v. Partek Corp. of HoustonBenitez v. (N.N.C.) Neptune Nav. Corp.Ortiz v. Secretary of Health, Education and WelfareRodriguez v. Secretary of Health, Education WelfareUnited States v. RecaNuñez v. Confederation Life Insurance Co.Cancel v. Secretary of Health, Education and WelfareAmerican Eutectic Welding Alloys Sales Co. v. Garcia-RodriguezRheingold Breweries, Inc. v. Antilles Breweries, Inc.Espada v. United States