@misc{indiciaee919023e43f7,
  title = {Revisionary notes on neotropical porcupines (Rodentia, Erethizontidae). 1, Type material described by Olfers (1818) and Kuhl (1820) in the Berlin Zoological Museum — Illustration, Page 31},
  year = {1997},
  url = {https://www.biodiversitylibrary.org/page/62214116},
  note = {Source identifier: page-62214116}
}