%0 Journal Article %T Exposure assessment of elemental carbon, polycyclic aromatic hydrocarbons and crystalline silica at the underground excavation sites for top-down construction buildings %A Park, Hyunhee %A Hwang, Eunsong %A Jang, Miyeon %A Yoon, Chungsik %J PLoS ONE %V 15 %N 9 %D 2020-09-14 %I Public Library of Science %~ DeepDyve