@misc{indiciae254720ed714f,
  title = {Age-class structure and variability of two populations of the bluemask darter etheostoma (Doration) sp.},
  author = {J.W. Simmons and James B. Layzer and D.D. Smith},
  year = {2008},
  doi = {10.1674/0003-0031(2008)160[300:asavot]2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70033701},
  note = {Source identifier: 70033701}
}