{"id":"001051315","type":"book","title":"Reduction hypothesis and scraper morphology of Polish and Bulgarian Middle Palaeolithic","publisher":"Uniwersytet Jagielloński, Instytut Archeologii","publisher-place":"Kraków","pages":"43-64","container-title":"Problemy epoki kamienia na obszarze Starego Świata. Księga Jubileuszowa dedykowana Profesorowi Januszowi K. Kozłowskiemu. Problems of the Stone Age in the Old World. Jubilee Book dedicated to Professor Janusz K. Kozłowski","author":[{"family":"Tsonev","given":"Tsoni"}],"issued":{"raw":"2001"}}