Sumanti, S., Nurachmi, irvina and Ikhwan Siregar, Y. 2020. ANNALYSIS OF Pb, Cu AND Zn METAL CONTENTS IN RED CHUT-CHUT SNAIL (Cerithidea obtusa) AND SEDIMENT IN MENDOL ISLAND KUALA KAMPAR OF RIAU PROVINCE. Asian Journal of Aquatic Sciences. 2, 2 (Jan. 2020), 153-161. DOI:https://doi.org/10.31258/ajoas.2.2.153-161.