Tingkat Perkembangan Tanah Berdasarkan Pola Distribusi Mineral Liat Di Kecamatan Lumbanjulu Kabupaten Toba Samosir: The level of soil development based on the pattern of clay mineral distribution in Subdistric Lumbanjulu, Distric of Toba Samosir
- Publication date
- 2 May 2017
- Publisher
- Mutiara Talenta Publisher