@misc{indiciaeacc5756a2bf6,
  title = {Net primary productivity of periphytic algae in the intertidal zone, Duwamish River estuary, Washington},
  author = {L. J. Tilley and W.L. Haushild},
  year = {1975},
  url = {https://pubs.usgs.gov/publication/70171427},
  note = {Source identifier: 70171427}
}