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该调查区是洮南市鼠疫自然疫源地的重要组成部分,也是松辽平原黄鼠疫源地的特殊地理类型。辖六个乡镇,总面积9万公顷,有历史疫点19处,形成一条自然疫源地带。最早发生年代1945年,最后发生年代1954年。为此,我们选择这块具有一定代
The investigation area is an important part of the plague natural foci in Taonan City and is also a special geographical type of the plague origin in the Songliao Plain. Jurisdiction over six towns, with a total area of 90,000 hectares, 19 historic spots, forming a natural foci. The first occurred in 1945, the last occurred in 1954. To this end, we have chosen this piece has a certain generation