Ocean engineering and naval architecture Second Class Seamen (Navigation) 800 Subject ■ Problems and answers ■〈 2017 / 7 - 2020 / 4 "2021 Edition Last 3 Years Series
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Japanese title: 単行本(実用) 海洋工学・船舶工学 二級海技士〈航海〉800題 ■問題と解答■〈2017/7~2020/4〉 2021年版 最近3か年シリーズ