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1.- Drought water management: Proceedings of a National Workshop held in Washington,D.C., November 1-2, 1988 Grigg, Neil S., ed.; Congreso - National Workshop on Drought Water Management (1988. Washington, D.C.); Vlachos, Evan C., ed. Colorado state: University, 1990 I / 15 - 6 - 9 Ver registro
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