No. 997, Docket 87-4005. Argued April 8, 1987. Decided September 11, 1987. Norman Rothfeld, New York City, for respondent. Elliott Moore, Deputy Associate Gen. Counsel, N.L.R.B., Washington, D.C. (Rosemary M. Collyer, Gen. Counsel, John E. Higgins, Jr., Deputy Gen. Counsel, Robert E. Allen, Associate Gen. Counsel, N.L.R.B., Washington, D.C., of counsel), for petitioner. Joseph D. Luksch, New York City (Epstein Becker Borsody Green, P.C., of counsel), filed a brief for intervenor Burroughs Corp. Petition