| http://www.w3.org/ns/prov#value | - That it shall be the duty of the editor, publisher, business manager, or owner of every newspaper, magazine, periodical, or other publication, to file with the Postmaster General and the postmaster at the office at which said publication is entered, not later than the first day of April and the first day of October of each year, on blanks furnished by the Postoffice Department, a sworn statement s
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