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  1. 1

    Soil and water conservation: for productivity and environmental protection by TROEH, Frederick R.

    Published 1980
    Book
  2. 2

    Conservation of natural resources.-- Ed.4

    Published 1971
    Book
  3. 3

    Evaluasi sumberdaya alam: kumpulan penelitian hidrologi dan lingkungan buku pegangan kuliah by CHOLIL, Munawar

    Published 2004
    Book
  4. 4
  5. 5

    Lingkungan, sistem alami, dan pembangunan: pedoman penilaian ekonomis/Penerjemah Sukanto Reksohadiprodjo

    Published 1987
    Book