? EXTENSION OF POLIOMYELITIS -U.S. Congress. House. HEARING BEFORE A SUBCOMMITTEE OF THE ✓COMMITTEE ON INTERSTATE AND FOREIGN COMMERCE. EIGHTY-FOURTH CONGRESS SECOND SESSION ON H. R. 8704 A BILL TO EXTEND THROUGH JUNE 30, 1957, THE JANUARY 24, 1956 Printed for the use of the Committee on Interstate and Foreign Commerce |