Geomorphology and iron sand potential at coastal sediment morphology, Kebumen RegencyChusni Ansori, Puguh Dwi Raharjo, Agung Setianto, I Wayan Warmada and Nugroho Imam SetiawanE3S Web Conf., 200 (2020) 06004DOI: https://doi.org/10.1051/e3sconf/202020006004