@misc{indiciaeecd247d5107f,
  title = {Maryland Birdlife index, volumes 21-25, 1965-1969. Part 1, Species Index; part 2, Author index},
  author = {W.T. Van Velzen and A.C. Van Velzen},
  year = {1969},
  url = {https://pubs.usgs.gov/publication/5220037},
  note = {Source identifier: 5220037}
}