@misc{indiciaedbb0218d0738,
  title = {Enclosed bark as a pollen trap},
  author = {D.P. Adam and C.W. Ferguson and V.C. Lamarch},
  year = {1967},
  doi = {10.1126/science.157.3792.1067},
  url = {https://pubs.usgs.gov/publication/70010485},
  note = {Source identifier: 70010485}
}