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Hidayah, Bening Yuni'mah (2025) Implementasi Peraturan Presiden Nomor 21 Tahun 2017 Dalam Keberlanjutan Pengendalian Lumpur Lapindo Sidoarjo. (Implementation of Presidential Regulation Number 21 of 2017 in the Sustainability of Lapindo Mudflow Control in Sidoarjo). Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.