JAMABO, N. A, and A. C. CHINDAH. 2011. “SEX DETERMINATION AND GONAD DEVELOPMENT OF A MANGROVE PROSOBRANCH Tympanotonus Fuscatus Var Fuscatus (LINNAEUS, 1758) FROM BONNY ESTUARY, NIGERIA ”. Nigerian Journal of Fisheries 8 (2):358-64. https://fisonjournal.org.ng/index.php/njf/article/view/307.