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Beets, Willem C. (willem Cornelis)

Raising and sustaining productivity of small-holder farming systems in the tropics a hand book of sustainable agricultursl development willen c. Beets - Alkmar Agbe Pub 1990 - 738p:ill.,charts, photos, graphs

includes bibliographical references

Subjects--Topical Terms:
Agricultural --Economic aspects

LC Class. No.: Ref HD1417 / B43