A Monograph of the Existing Crinoids: Volume 1 The Comatulids, Part 4c.
Washington DC: GPO, 1950. 4to. 383 pp. Spine ends and corners are lightly bumped and rubbed, light rubbing along cover edges, museum stamps to endpapers. United States National Museum Bulletin 82. Part 4c.- Superfamily Tropiometrida. Very Good Paperback (Item ID: 70616)