National Labor Relations Board v. Enterprise Ass'n of Steam, Hot Water, Hydraulic Sprinkler, Pneumatic Tube, Ice Machine & General Pipefitters , 97 S. Ct. 49 ( 1976 )

C. A. D. C. Cir. [Certiorari granted, 424 U. S. 908.] Motion of Chamber of Commerce of the United States for leave to file a brief as amicus curiae granted.