TY - JOUR A1 - Thomson, [C.] W. DO - 10.1098/rspl.1871.0095 JO - Proceedings of the Royal Society of London N1 - Publication date: 20.6.2872; Alternative link: https://archive.org/stream/philtrans00795337/00795337#page/n0/mode/2up IS - 137 SP - 491 EP - 497 C1 - 20 (137): 491-497 TI - On the Echinidea of the 'Porcupine' Deep-sea Dredging-Expeditions UR - https://www.biodiversitylibrary.org/page/43397165 VL - 20 PY - 1872 Y2 - 2024-03-28 ER -