Following original article by E. Yamasue et al has been published in Global Environmental Research.
山末英嗣助教による次の論文がGlobal Environmental Research誌に掲載されました

Eiji YAMASUE, Kazuyo Matsubae and Keiichi N. Ishihara: “Weight at Source for Phosphorous Fertilizer Production”, Global Environmental Research, Vol.19, No.1 (2015) pp.97-104