by 上田, 達己, 遠藤, 和子, 國光, 洋二, 沖山, 充, 徳永, 澄憲, 石川, 良文
Published in Nōgyō Nōson Kōgakkai ronbunshū (2020)

by 國光, 洋二
Published in 農林業問題研究 (01.03.2014)

by 上田, 達己, 國光, 洋二, 沖山, 充, 徳永, 澄憲, 石川, 良文
Published in Nōgyō Nōson Kōgakkai ronbunshū (2019)

by 國光, 洋二, 上田, 達己, 沖山, 充, 徳永, 澄憲, 石川, 良文
Published in Nōgyō Nōson Kōgakkai ronbunshū (2018)

by 大塚, 芳嵩, 遠藤, 和子, 國光, 洋二
Published in Nōgyō Nōson Kōgakkai ronbunshū (2017)

by 國光, 洋二, 中田, 摂子
Published in Nōgyō Nōson Kōgakkai ronbunshū (2015)

by 國光, 洋二, 中田, 摂子
Published in Nōgyō Nōson Kōgakkai ronbunshū (2015)

by 國光, 洋二, 中田, 摂子
Published in Nōgyō Nōson Kōgakkai ronbunshū (2012)

by 國光, 洋二
Published in 農林業問題研究 (01.06.2008)

by 國光, 洋二
Published in 農村計画学会誌 (01.03.2007)

by 國光, 洋二
Published in 農業土木学会論文集 (25.04.2005)

by 國光, 洋二
Published in 農業土木学会論文集 (01.04.2005)

by 高橋, 渓, 古林, 敬顕, 中田, 俊彦, 國光, 洋二
Published in 日本エネルギー学会誌 (2011)

by 國光, 洋二
Published in 農業土木学会誌 (01.12.2003)

by 國光, 洋二
Published in 農業経済研究 (01.12.2003)

by 國光, 洋二
Published in 農業土木学会論文集 (25.12.1999)

by 國光, 洋二
Published in 農業土木学会論文集 (01.12.1999)

by 國光, 洋二
Published in 農業土木学会論文集 (25.12.1998)

by 國光, 洋二
Published in 農業土木学会論文集 (01.12.1998)

by 國光, 洋二
Published in 農業土木学会誌 (01.05.2000)