Soil and water conservation for productivity and environmental protection

I tiakina i:
Ngā taipitopito rārangi puna kōrero
Kaituhi matua: Troeh, Frederick R.
Ētahi atu kaituhi: Donahue, Roy L., Hobbs, J. Arthur (James Arthur), 1914-
Hōputu: Pukapuka
Reo:Ingarihi
I whakaputaina: Englewood Cliffs, N.J. Prentice-Hall c1980
Ngā marau:
Soil conservation
Soil erosion
Water conservation
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