Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Wai Nu Nu and Hamaoka Yukiko and Giles John H.,Gender Differentiation in Problem-based Learning : A Lesson on Sustainable Agriculture,GEOGRAPHICAL SCIENCES,0286-4886,THE JAPANESE SOCIETY FOR GEOGRAPHICAL SCIENCES,2005,60,3,233,https://cir.nii.ac.jp/crid/1390282679413143168,https://doi.org/10.20630/chirikagaku.60.3_233_2