Preliminary Investigation of Some Biological Aspects of Length-Weight Relationship and Condition Factor of Periwinkle (Tympanotonus Fuscatus, Linnaeus 1758) From Okrika Estuary. (2017). Global Journal of Science Frontier Research, 17(E1), 7-13. https://journalofscience.org/index.php/GJSFR/article/view/2079