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1991年1月28至31日,山东在济南召开全省学校卫生工作会议,确定1991年的主要任务是每个地(市)选定一个农村学校卫生工作试
From January 28 to January 31, 1991, Shandong Province held a meeting on school health work in Jinan. It was determined that the main task of 1991 was to select a rural school health work test for each place (city).