Characteristics of composted bio-toilet residue and its potential use as a soil conditioner
 Artikel Jurnal
Istilah sains tanah
Kuala Lumpur : Dewan bahasa dan pustaka, 1989,
 Buku Referensi
The effect of water regime and soil management on methane emission reduction from rice field
 Artikel Jurnal
Haris Wartono, author
Pedoman pengadaan tanah bagi pembangunan kepentingan umum
jakarta : Medika Karya, 1994,
 Buku Referensi
Analisis penentuan tahanan tanah menggunakan digital earth resistance tester ST-1520
Universitas Indonesia, 2005
 UI - Tugas Akhir
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