Institution: | Fukada Geological Institute, 2-13-12 Hon-Komagome, Bunkyo, Tokyo 113-0021, Japan (email: ),;Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8572, Japan and;OYO Corporation, 108 Kaminomachi Higashi, Kanazawa 920-0365, Japan |