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 2 Irrigation efficiency.
Book Irrigation engineering --Handbooks, manuals, etc.
Book Irrigation farming.
Book Irrigation farming --Africa, Sub-Saharan.
Book Irrigation--Government policy--West (U.S.)--History.
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Book Irvin, Michael, 1966-
Book Irvine, Lucy, 1956-
Serial Isaac, Bryan 1954-
Book Isanti County (Minn)--Emigration and immigration.
Book Iseult (Legendary character)--Romances--Adaptations.
Book Ishi, 1916.
 2 Ishi, d. 1916.
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