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_aDavis, J. Ruhard. _931271 |
| 245 | 1 | 4 | _aThe usefulness of computer aids that capture exchange knowledge about land management |
| 500 | _aSobretiro de: University of Guelph. Management of rural resources: problems and policies. -- Guelph, 1985 pp. 1-23 | ||
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_aComputadoras. _926129 |
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_aTierras _xUtilización. _9113219 |
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_aCocks, K. D. _924232 |
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_aNanninga, P. M. _980114 |
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