Yanai, Keizo (National Inst. of Polar Research Tokyo, Japan)
Takeda, Hiroshi (Tokyo Univ. Japan)
Lindstrom, M. M. (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Tatsumoto, M. (Geological Survey Denver, CO., United States)
Torigoe, N. (Geological Survey Denver, CO., United States)
Misawa, K. (National Inst. of Polar Research Tokyo, Japan)
Warren, P. H. (California Univ. Los Angeles., United States)
Kallemeyn, G. W. (California Univ. Los Angeles., United States)
Koeberl, C. (Wien Univ. Austria)
Kojima, H. (National Inst. of Polar Research Tokyo, Japan)