No. 19058. Argued April 22, 1971. Decided June 11, 1971. Charles R. Both, Atty., N.L.R.B., Washington, D.C. (Arnold Ordman, Gen. Counsel, Dominick L. Manoli, Associate Gen. Counsel, Marcel Mallet-Prevost, Assistant Gen. Counsel, Abigail Cooley Baskir, Atty., N.L.R.B., on the brief), for petitioner. Robert H. Kleeb, Morgan, Lewis Bockius, Philadelphia, Pa. (Peter D. Walther, Mark S. Dichter, Philadelphia, Pa., on the brief), for respondent, Bulletin Co. Bernard N. Katz, Meranze, Katz, Spear and Bielitsky