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Hall, A.E.
![Agriculture in Semi-Arid Environments</a>](/cover/9783642673306/agriculture-semi-arid-environments.webp)
Agriculture in Semi-Arid Environments
The semi-arid zones of the world are fragile ecosystems which are being sub stantially modified by the activities of mankind. Increasing human populations have resulted in greater demands on semi-arid zones for providing human susten ance and the possibility that this may enhance desertification is a grave concern.