Nos. 219, 154, Dockets 87-4039, 87-4049. Argued October 9, 1987. Decided January 22, 1988. Harriet Lipkin, Atty., N.L.R.B., Washington, D.C. (Collis Suzanne Stocking, Supervisory Atty., Rosemary M. Collyer, Gen. Counsel, John E. Higgins, Jr., Deputy Gen. Counsel, Robert E. Allen, Associate Gen. Counsel, Elliot Moore, Deputy Associate Gen. Counsel, on the Brief), for petitioner-cross-respondent. Anthony L Tersigni, New York City (Meyers, Tersigni, Lurie, Feldman Gray, New York City, of counsel), for