C. A. 3d Cir. [Certiorari granted, 410 U. S. 953.] Motion of National Association of Manufacturers for leave to file a brief as amicus curiae in support of petitioner granted.
C. A. 3d Cir. [Certiorari granted, 410 U. S. 953.] Motion of National Association of Manufacturers for leave to file a brief as amicus curiae in support of petitioner granted.