전자파를 이용한 선박 운항 안전성 강화 방안 연구

전자파를 이용한 선박 운항 안전성 강화 방안 연구

132 Pages · 2017 · 2.21 MB · Korean
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“ Every block of stone has a statue inside it and it is the task of the sculptor to discover it. ” ― Michelangelo
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