Nǣo patibat kanphatthanā khwāmplō̜tphai nai kānthamngān bǣp
Nǣo patibat kanphatthanā khwāmplō̜tphai nai kānthamngān bǣp yangyư̄n rư̄ang "kānbō̜rihān khwāmplō̜tphai ʻāchīwaʻanāmai læ saphāpwǣtlō̜m nai kānthamngān" tām čhēttanārom khō̜ng kotmāi khwāmplō̜tphai nai kānthamngān
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On industrial safety and hygiene administration in Thailand.
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