帆装商船の運航実態とその問題点について
On Actual Condition of Service of Sail Equipped Vessels and its Problem

Masayoshi KUBO, Shunsuke TAKAOKA
1994 NAVIGATION  
doi:10.18949/jinnavi.120.0_69 fatcat:ib5rtvgvdvc2jd5ikr4avj474u