Shōrai no kaiun
By: Sakai Shōichi
Series: Umi no kinenbi kyōsan kenshō ronbunshū -- dai 2-kai, dai 8-satsu
Publisher: Kaiun Kokusaku Kenkyūkai
Published: 1942
Place of publication: Kōbe-shi
Language: jpn
Number of pages: 30
Subjects: Forecasting; Merchant marine; Shipping