title: Closely examining replacement guidance.
authors.forename: L W Michael
authors.initials: LW
authors.lastname: Arrowsmith
mesh_terms: D005740:Gases; D006779:Hospitals, Public; D008284:Maintenance and Engineering, Hospital / Q000458:organization & administration*; D012498:Sanitary Engineering; D013222:State Medicine; D006113:United Kingdom
chemical_list: D005740:Gases