Shizuoka prefecture botanical exploration club , university forest in chiba , the university forests , faculty of agriculture , the university of tokyo , arboricultural research institute , the university forests , faculty of agriculture , the university of tokyo .

静冈植物群落探胜同好会,东京大学农学部附属演习林千叶演习林,东京大学农学部附属演习林树芸研究所。