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القيود الموجودة: 14 للبحث عن: "irrigation and water conservation"

الترتيب حسب: المؤلف - العنوان - تاريخ النشر

• -- DESIGN MANUAL FOR IRRIGATION AND DRAINAGE -- 1933 -- B
• GURJAR,RAM KUMAR FOR:MOHAMMAD SHAFI -- IRRIGATION FOR AGRICULTURAL MODERNIZATION -- 1987 -- B
• SCHWAB,GLENNO RICHARD,K.FREVERT TALCOTTW.EDMINSTER -- SOIL AND WATER CONSERVATION ENGINEERING -- 1981 -- B
• GURJAR,RAM KUMAR -- IRRIGATION FOR AGRICULTRAL MODERNIZATION -- 1987 -- B
• -- design manual for irrigation and drainage -- 1983 -- b
• hansen,vaughn -- irrigation principles and practices -- 1979 -- b
• hansen,vaughn -- irrigation principles and practices -- 1979 -- b
• SCHWAB,GLENNO RICHARD K. FREVERT -- ELEMENTRY SOIL AND WATER ENGINEERING -- 1985 -- B
• GUPT AND KU PAHWA -- INTERNATIONAL RESEARCH ON SALING IRRIGATTION WATERS -- 1981 -- B
• iraq -- discharges for selected gauging stalions in iraq -- 1967 --
• iraq -- discharges for selected gauging stalions in iraq -- 1967 --
• iraq -- discharges for selected gauging stalions in iraq -- 1967 --
• iraq -- discharges for selected gauging stalions in iraq -- 1967 --
• iraq -- discharges for selected gauging stalions in iraq -- 1967 --

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