kw.\*:("SILISTRA,REGION")
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AGRICULTURAL WATER DEMANDS: PRELIMINARY RESULTS OF SILISTRA CASE STUDY.GOUEVSKY IV; MAIDMENT DR.1977; INTERNATION. INST. APPL. SYST. ANAL., RES. MOR.; AUSTR.; DA. 1977; NO 44; PP. (98P.); BIBL. 4 REF.; 15 ILL.Serial Issue