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21. Quality control of waste water for irrigated crop production /   Publication: Rome : FAO, 1997 . x,86 p. : Date:1997 Availability: Copies available: Turkeyen Campus Social Sciences [TC153 W38 no.10] (1), Actions: Add to cart
22. Free-riders or victims :   Publication: Colomboo, Sir, Lanka : International Irrigation Management Institute, 1996 . v,21 p. - Date:1996 Availability: Copies available: Turkeyen Campus Science & Technology [TC812 Z93] (1), Actions: Add to cart