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Lua MLA (8ú heag.)Universitas Katolik Parahyangan. Lembaga Penyelidikan Ilmiah agus Indonesia. Direktorat Penyelidikan Masalah Bangunan. Report of the After Survey of the KIP-UNEP in Bandung and Surabaya: Report of a Cooperative Survey of the Directorate of Building Research of the Ministry of Public Work with Research Institute at the Catholic University Parahyangan. 2nd ed. Universitas Katolik Parahyangan, Lembaga Penyelidikan Ilmiah], 1980.