Yusō anzen taisaku chōsa hōkokusho
Subtitle: kōkū anzen no tame no kazanbai jōhō dentatsu ni kakawaru chōsa
By: Un'yushō ; itakusaki Nihon Kishō Kyōkai
Contributors: Nihon Kishō Kyōkai
Publisher: Un'yushō?]
Published: 1996
Place of publication: [Tokyo
Language: jpn
Number of pages: 259
Subjects: Aeronautics; Environmental aspects; Volcanic ash, tuff; Safety measures
Notes: Cover title.

Some data in English.