No. 18194. Argued March 25, 1964. Decided June 18, 1964. Mr. Mozart G. Ratner, Washington, D.C., with whom Mr. Robert M. Lichtman, Washington, D.C., was on the brief, for petitioner. Mr. Stephen B. Goldberg, Attorney, National Labor Relations Board, of the bar of the Supreme Court of California, pro hac vice, by special leave of court, with whom Messrs. Arnold Ordman, General Counsel, Dominick L. Manoli, Associate General Counsel, Marcel Mallet-Prevost, Asst. General Counsel, and Harold B. Shore