
    Cologa Vitanza et al., Doing Business as V. C. Vitanza Sons, Appellants, v City of New York et al., Respondents.
    Argued September 14, 1976;
    decided October 19, 1976
    
      
      Morris Weissberg and N George Turchin for appellants.
    
      W Bernard Richland, Corporation Counsel (Martin H. Selman and L. Kevin Sheridan of counsel), for City of New York and another, respondents.
    
      Joseph S. Kaming and Marc S. Krieg for Association of Contracting Plumbers of the City of New York, Inc., respondent.
   Order affirmed, with costs, on the opinion by Mr. Justice Marcus G. Christ at the Appellate Division (48 AD2d 41).

Concur: Chief Judge Breitel and Judges Jasen, Gabrielli, Jones, Wachtler, Fuchsberg and Cooke.  