@misc{indiciae20b7f29b12f4,
  title = {Distribution of light and heavy fractions of soil organic carbon as related to land use and tillage practice},
  author = {Zhengxi Tan and R. Lal and L. Owens and R. C. Izaurralde},
  year = {2007},
  doi = {10.1016/j.still.2006.01.003},
  url = {https://pubs.usgs.gov/publication/70159364},
  note = {Source identifier: 70159364}
}