Rizky Fajar Ryandi and Yulian Findawati (2021) “Land Certification Information System of Sidoarjo Regency Land Office: Rancang Bangun Sistem Informasi Sertifikasi Tanah Kantor Pertanahan Kabupaten Sidoarjo”, Procedia of Engineering and Life Science, 1(1). doi: 10.21070/pels.v1i1.739.