No. 78-1122. Argued September 12, 1978. Decided December 14, 1978. Corina Metcalf, Atty., Washington, D.C., with whom John S. Irving, Gen. Counsel, John E. Higgins, Jr., Deputy Gen. Counsel, Carl L. Taylor, Associate Gen. Counsel, Elliott Moore, Deputy Associate Gen. Counsel, John H. Ferguson and Elizabeth Bunn, Attys., Washington, D.C., were on brief, for petitioner. Carol Chandler, Boston, Mass., with whom Robert Chandler, and Stoneman, Chandler Miller, Boston, Mass., were on brief, for respondent