Edullantes, Brisneve, & Ritchelita Galapate.
" Embryotoxicity of Copper and Zinc in Tropical Sea Urchin <em>Tripneustes gratilla</em>." <em>Science Diliman: A Journal of Pure and Applied Sciences</em> [Online], 26.1 (2014): n. pag. Web.  3 Sep. 2025