Malawani, M.N. et al. 2019. Recent delta evolution based on mollusk shell record on sediment in Delta Wulan, Demak, Indonesia. Geo Media: Majalah Ilmiah dan Informasi Kegeografian. 16, 2 (May 2019). DOI:https://doi.org/10.21831/gm.v16i2.25204.