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Sluices (Pmhmrm)

Computer viruses ()
Facilities (P)
     Use For: Complexes; Installations
    Transportation, hydraulic and utility facilities (Pm)
        Hydraulic structures (Pmh)
            Dams (Pmhm)
                Parts of dams (Pmhmr)
                    Dam foundations (Pmhmrf)
                    Fish ladders (Pmhmrh)
                    Sluices (Pmhmrm)
                    Spillways (Pmhmrp)