Mudskipper as an Indicator Species for Lead, Cadmium and Cuprum Heavy Metal Pollution in the Mangrove, Ambon, Indonesia oleh Kristin Sangur, Fredy Leiwakabessy, Hasan Tuaputty, Laura Vintan Tuwankotta, Sisilya Vionetha Samloy, Costantina Ratila, Olivia Basye Salakory, Chimberly Matulessy, Dominggus Rumahlatu