Paris (1) Distances, etc (1) Costs (1) Communication (1) Fiction (1) Piping (1) Worry (1) Water (1) Valves (1) Possibility (1) Play (1) Pipelines (1) Novelties (1) Mine drainage (1) Hydraulics (1) Goal (Psychology) (1) Control theory (1) Cities and towns (1) Certainty (1) Cavitation (1) Automatism (1) Appraisers (1) Air (1) Accommodation indorsements (1) Water-supply (1) Vibration (1) Technological innovations (1) Stability (1) September (1) Science (1)