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gv. glory to the gods (2023-11-08 03:49:27)
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书是正版,很不错。卫生学:是在“预防为主”的卫生工作方针指导下,以人群及其周围的环境为研究对象,研究外界环境因素与人群健康的关系,阐明环境因素对人群健康影响的规律,提出利用有益环境因素和控制有害环境因素的卫生要求及预防对策的理论根据和实施原则,以达到预防疾病、促进健康、提高生命质量的目的。
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