Kuriko Iwai and Michihiro Kita, Study on Diversified Developments Improving Environmental Values-In Case of University Campus -. journal = {International Journal of Humanities and Social Sciences}, [online]. World Academy of Science, Engineering and Technology. September 2007, vol. 9(9). 441 - 448 [viewed 19 September 2024]. Available from: https://publications.waset.org/pdf/839.