화학물질의 분류 ․ 표지에 관한 세계조화시스템 (GHS)

화학물질의 분류 ․ 표지에 관한 세계조화시스템 (GHS)

453 Pages · 2005 · 2.65 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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