ICARDA/OPEC Pilot Project for Verification and Adoption of Improved Wheat Production Technology in Farmer's Fields in the Sudan Bezüge im Wissensnetz In Beziehung stehende Körperschaft (2) GND-Körperschaften International Center for Agricultural Research in the Dry Areas OPEC Isb (1) DNB-Titeldaten Verification and adoption of improved wheat production technology in farmers' fields in the Sudan