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  Indian J Med Microbiol
 

Figure 3: Linear regression analysis of 40K/226Ra vs. 40K/232Th and 40K/226Ra vs. 226Ra/232Th

Figure 3: Linear regression analysis of <sup>40</sup>K/<sup>226</sup>Ra vs. <sup>40</sup>K/<sup>232</sup>Th and <sup>40</sup>K/<sup>226</sup>Ra vs. <sup>226</sup>Ra/<sup>232</sup>Th