TY - BOOK TI - Studies in the development of crinoids UR - https://www.biodiversitylibrary.org/item/43956 PB - Carnegie Institution of Washington CY - Washington PY - 1920 N1 - At head of title: Department of Marine Biology of the Carnegie Institution of Washington. Alfred G. Mayor, Director. Papers from the Department of Marine Biology of the Carnegie Institution of Washington, vol. xvi. AU - Mortensen, Theodor, KW - Crinoidea ER -