Figure 6From: Stirred, not shaken: genetic structure of the intermediate snail host Oncomelania hupensis robertsoni in an historically endemic schistosomiasis areaClassification of watersheds in the Deyang-Mianyang area. Watershed (WS1-5) classification of 18 study sites of Oncomelania h. robertsoni. For county and site codes see Table 3.Back to article page