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_957181 _aCHIDUMAYO, E.N. |
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| 260 | _c1987 | ||
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_9134805 _aAGRICULTURA MIGRATORIA |
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_tAgroforestry Systems (Países Bajos) _d1987 _gv.5(1) p.15-25 |
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| 245 | 1 | 0 | _aA shifting cultivation land use system under population pressure in Zambia |
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_c49623 _d49623 |
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