| Unidentified photographer Óbuda Shipyard, workshop ["Goromba kovács muhely"], Hungary 1927, 8 November Photograph FOTO:Fortepan www.fortepan.hu (Accessed: May 2018), Id: 133211, Donor: Hungarian Museum Of Technology And Transport / Collection Of Historical Photos / Collection Of Óbudai Shipyard, Inventory number: N271 LL/82952
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