Nos. 76-1067 and 76-1198. Argued March 31, 1977. Decided June 24, 1977. Vivian I. Schorman, New York City, for petitioner in No. 76-1067. Arthur M. Goldberg, Washington, D.C., was on the brief for petitioner in No. 76-1067. William H. Emer, Los Angeles, Cal., for petitioner in No. 76-1198 and intervenor in No. 76-1067. Jay E. Shanklin, Atty., N.L.R.B., Washington, D.C., with whom John S. Irving, Gen. Counsel, Carl L. Taylor, Associate Gen. Counsel, and Elliott Moore, Deputy Associate Gen. Counsel