{"id":"002013876","type":"article","title":"Human activity recorded in carbon isotopic composition of atmospheric CO2 in Gilwice urban area and surroundings (Southern Poland) in the years 2011-2013","publisher":"Cambridge University Press","publisher-place":"New York","container-title":"Radiocarbon, 62 (2020), 0033-8222","author":[{"family":"Piotrowska","given":"Natalia"},{"family":"Pazdur","given":"Anna"},{"family":"Pawelczyk","given":"Slawomira"},{"family":"Rakowski","given":"Andrzej Z"}],"issued":{"raw":"2020"}}