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Putri, Divia Rahma (2026) Studi Eksperimental Perbaikan Sifat Fisis dan Mekanis Tanah Lempung Lunak Menggunakan Serbuk Cangkang Bekicot dan Bakteri Bacillus Subtilis (Lokasi Studi: Desa Ploso, Kecamatan Wonoayu, Kabupaten Sidoarjo). (Experimental Study on the Improvement of Physical and Mechanical Properties of Soft Clay Soil Using Giant African Snail Shell Powder and *Bacillus subtilis* Bacteria (Study Location: Ploso Village, Wonoayu District, Sidoarjo Regency)). Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.