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Safitri, Rachmah Dewi (2022) Inovasi Pelayanan E-SPTPD dalam Meningkatkan Efisiensi Administrasi di Masa Pandemi Covid-19 (Studi Kasus di Badan Pelayanan Pajak Daerah Kabupaten Sidoarjo). (E-SPTPD Service Innovation in Improving Administrative Efficiency During the Covid-19 Pandemic (Case Study at the Regional Tax Service Agency of Sidoarjo Regency)). Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.