@misc{indiciaeec693cb8b8a8,
  title = {Temporal changes in nitrogen pollution in northeastern Estonia.},
  author = {V Liblik},
  year = {2001},
  doi = {10.1100/tsw.2001.304},
  url = {https://pubmed.ncbi.nlm.nih.gov/12805838/},
  note = {Source identifier: 12805838}
}