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![Working on the Douro River (1931) Working on the Douro River (1931)](http://images.weserv.nl/?url=//image.tmdb.org/t/p/w185/bcvXqXbZ1xnIypjnQkc65Zoh7fL.jpg)
Working on the Douro River (1931)
Short silent documentary from 1931 about those working on the River Douro in Oporto.