D. Puerto Rico May 1971 casesAyala v. Secretary of Health, Education and WelfareCardona v. Secretary of H., E., W.Salgado v. Employers Ins. of WausauFranqui v. Secretary of Health, Education WelfareRexco Indus. v. Commercial Ins. Co. of Newark, N.J.Inversiones Financieras C. Por A. v. Hitachi Sales Caribe, Inc.Sears Roebuck Co. v. Herbert H. Johnson Ass.