@misc{indiciaece6af78837a8,
  title = {An improved method for quantifying soil macroporosity},
  author = {V. R. Vermeul and J.D. Istok and A. L. Flint and J.L. Pikul},
  year = {1993},
  doi = {10.2136/sssaj1993.03615995005700030030x},
  url = {https://pubs.usgs.gov/publication/70199778},
  note = {Source identifier: 70199778}
}