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Keywords from Image Description:
EffretikonHinwil Wildbachbrcke. de Bahnstrecke EffretikonHinwil bei Embrach Belastungsprobe der Wildbachbrcke epics ethz ch bildarchiv BildarchivAnsALFL html Bachmann Zrich Fotograf CarliBodmer Lithographie Weber Julius Ingenieur PDold Iron truss beam bridges Black and white photographs of bridges Deck truss bridges Schweizerische