
    No. 81-280.
    No. 81-330.
    No. 81-331.
    No. 81-332.
    No. 81-333.
    General Building Contractors Assn., Inc. v. Pennsylvania et al.; United Engineers & Constructors, Inc. v. Pennsylvania et al.; Contractors Association of Eastern Pennsylvania et al. v. Pennsylvania et al.; Glasgow, Inc. v. Pennsylvania et al.; and Bechtel Power Corp. v. Pennsylvania et al.
   C. A. 3d Cir. [Certiorari granted, ante, p. 939.] Motion of Washington Legal Foundation for leave to file a brief as amicus curiae granted.  