OECD technical assistance to the Centre for Agricultural Research and Development of the Ebro Region (Spain). - 103 pages : map, tables ; 24 cm - Technical assistance evaluation studies . LCCN: 77579859 Nat. Bib. No.: F*** Subjects--Topical Terms: Technical assistance--Spain--River Valley Subjects--Geographic Terms: Ebro River Valley (Spain)--Economic conditions LC Class. No.: HC387.E2 / O74 1971