TY - ART TI - Revisionary notes on neotropical porcupines (Rodentia, Erethizontidae). 1, Type material described by Olfers (1818) and Kuhl (1820) in the Berlin Zoological Museum — Illustration, Page 22 PY - 1997 UR - https://www.biodiversitylibrary.org/page/62214125 ID - page-62214125 ER -