F50 火山灰可溶性物質の C1/SO4 比
The C1/SO4 ratio of water soluble material on volcanic ash

S. Akagi, M. Yamamoto, J. Ossaka
1994 Programme and Abstracts the Volocanological Society of Japan  
doi:10.18940/vsj.1994.2.0_110 fatcat:4titkkq57vf5xcoqfqisqcwxjq