?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Mohammad+Rizki+Setiawan%2C+Setiawan&rft.aufirst=Setiawan&rft.aulast=Mohammad+Rizki+Setiawan&rft.degree=Bachelor&rft.inst=Saind+dan+Teknik&rft.date=30+July+2026&rft.title=Analisis+Pemborosan+dan+Usulan+Perbaikan+Produksi+Beton+Menggunakan+Value+Stream+Mapping+dan+Root+Cause+Analysis