[1]
Dean, H.K. and Cutler, E.B. 1998. Range extension of Nephasoma pellucidum, and new records of Apionsoma (Edmonsius) peclinalum (Sipuncula) and Thalassema steinbecki (Echiura) from the Pacific of Costa Rica. Revista de Biología Tropical. 46, S6 (Dec. 1998), 279–280.