著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) ,Agronomic and socio-economic constraints to high yield of upland rice in Tanzania,African Journal of Agricultural Research,,,2012,Vol.5(2),,150-158,https://cir.nii.ac.jp/crid/1010282257030844032,