@misc{indiciae195447392ef4,
  title = {A key to the anuran tadpoles of the United States and Canada},
  author = {R. Altig and R.W. McDiarmid and K.A. Nichols and P.C. Ustach},
  year = {1998},
  url = {https://pubs.usgs.gov/publication/5224664},
  note = {Source identifier: 5224664}
}