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遵照毛主席“一切实际工作者必须向下作调查”的伟大教导,根据燃料化学工业部关于在开展药剂研制工作前必须作好调查工作的指示精神,由唐山市化工研究所、沈阳化工研究院、吉林市轻化工研究所委派共计十名同志组成玉米大小斑病调查组。根据71年7月份部科技组对玉米大小斑病初步调查的结果,这次调查范围选定为华北区、西北区、东北区(简称“三北”地区)和山东
In accordance with the great teachings of Chairman Mao, “All practical workers must make further investigations,” according to the instructions of the fuel chemistry industry department that investigations must be done before conducting pharmaceutical research and development work, Tangshan Institute of Chemical Industry, Shenyang Institute of Chemical Industry , Jilin Institute of Light Chemical Technology appointed a total of 10 comrades to form corn size spot investigation team. According to the result of a preliminary survey conducted by the ministry’s science and technology group on maize size spot in July 71, the survey range was selected as North China, Northwest China, Northeast China (referred to as the “Three North” region) and Shandong