Shaxson, T., al., et Land Husbandry. A Framework for Soil and Water Conservation,
Soil and Water Conservation Society, 1989, 64 p. ill., 0-935734-20-1.
Shaxson, T., al., et.
Land Husbandry. A Framework for Soil and Water Conservation.
Ankeny: Soil and Water Conservation Society, 1989, 64 p. ill., 0-935734-20-1.
Shaxson, T., al., et (1989)
Land Husbandry. A Framework for Soil and Water Conservation,
Ankeny: Soil and Water Conservation Society, 64 p. ill., 0-935734-20-1