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) Ricardo Godoy and Ruben Lubowski and Anil Markandya,A method for the economic valuation of non-timber tropical forest products,Economic Botany,0013-0001,Springer Science and Business Media LLC,1993-07,47,3,220-233,https://cir.nii.ac.jp/crid/1363388845902543488,https://doi.org/10.1007/bf02862288