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Wulandari, Vivi (2023) Analisis Pendapatan dan Kelayakan Usaha Pedagang Lontong Kupang di Area Pantai Ria Kenjeran Kota Surabaya. (Analysis of Income and Business Feasibility of Kupang Grocery Traders in the Ria Kenjeran Beach Area of Surabaya City). Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.