Hiring Of Work Management Services, Directorate Of Execution And Coordination Of Safety And Health For Construction, With Industrialized Techniques, Of 4 Buildings For 108 Public Promotion Housing (Vpp) In The M-Ivb-20, M-Ivb-22, M-Va-3 And M-3 And M-M-3 And 6 Of San Paio Partial Plan Of San Paio De Navia, Vigo (Pontevedra), By Lots.