cover-footprint-copped.jpg
![](/sites/default/files/styles/embed_lg_1x/public/cover-footprint-copped_0.jpg?itok=UX5pXIfh)
Date:
26 February 2020
Copyright OIST (Okinawa Institute of Science and Technology Graduate University, 沖縄科学技術大学院大学). Creative Commons Attribution 4.0 International License (CC BY 4.0).