Contract Notice - General Guideline, Standard Rules Negotiated Procedure With Prior Publication Of A Call For Competition/Negotiated Procedure (Services) 255. Comparative Examination Of Environmental And Green Maintenance Management In Construction Yards At 15 Hessian Corporations The 255Th Comparative Audit "Environmental And Green Maintenance Management In Building Yards" Is Based On The Law Regulating The Supra-Local Audit Of Municipal Corporations In Hesse (Üpkkg) Of December 22Nd ... More (EXPIRED)