TY - BOOK AU - Partov, Doncho AU - Maślak, Mariusz AU - Ivanov, Radan AU - Petkov, Milen AU - Sergeev, Denislav AU - Dimitrova, Antoaneta PY - 2016 TI - The development of wooden bridges through the ages – a review of selected examples of heritage objects. Part 1 – the milestones T2 - SP - EP - VL - ER -