Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Murphy, Josette and Casley, D. J. and Curry, John J.",Farmers' estimations as a source of production data : methodological guidelines for cereals in Africa,,World Bank,1991,World Bank technical paper,,0821317059,,https://cir.nii.ac.jp/crid/1130282272227652992