RT Journal Article SR Electronic T1 On the structure of [Obolella chromatica. JF American Journal of Science JO Am J Sci FD American Journal of Science SP 176 OP 178 DO 10.2475/ajs.s3-11.63.176 VO s3-11 IS 63 A1 Elkanah Billings YR 1876 UL http://www.ajsonline.org/content/s3-11/63/176.abstract AB