Lead (Pb) Contamination in Sediments and the Potential of Gastropods as Bioindicators of Pb in Mangrove Forests, Mojo Village, Pemalang The Characteristics of Bioplastic Made from Sodium Alginate and Kappa Carrageenan Morphology of Spicules of Phyrella sp. (Sea Cucumber) from Demak Waters, Central Java, Indonesia More recent articles