
    No. 833.
    Houston Chapter, Associated General Contractors of America, Inc., et al. v. National Labor Relations Board.
    
      L. G. Clinton, Jr., and Tom M. Davis for petitioners.
    
      Solicitor General Marshall, Arnold Ordman, Dominick L. Manoli and Norton J. Come for respondent.
   C. A. 5th Cir. Certiorari denied.  