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SCIENTIFIC AMERICAN SUPPLEMENT 89 View of the administration building and court. Interior, showing the vault of the concrete hall. ENGINEERING EXHIBITS. The engineer's share in the general work of civilization comes in for representation-how he reclaims moors and marshes, makes or drains lakes, compels the mountain stream to light thlO) city's streets; drive factories and mills, and transport the city's population; how he puts fardoi:10.1038/scientificamerican08091913-89supp fatcat:5d2hp5csh5cd5di32t5y3yo4mi