
    No. 977.
    No. 984.
    No. 1013.
    Martin-Marietta Corp. et al. v. Maricopa County; United Concrete Pipe Corp. et al. v. Maricopa County et al.; and American Pipe & Construction Co. et al. v. Maricopa County.
   C. A. 9th Cir. Certiorari denied. Reported below: 431 F. 2d 1145.  