@misc{indiciae1a8d730cfc8a,
  title = {[Cooperation with nature. A reply].},
  author = {G Tollskog and B Ek and I Källqvist and S Lanevik},
  year = {1968},
  url = {https://pubmed.ncbi.nlm.nih.gov/5265117/},
  note = {Source identifier: 5265117}
}