Figure 8: Principal component per type of hearing protector (1 to 5): Mean and standard error. (a) PCA 1 and PCA 2 (b) PCA 1 and PCA 3
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Figure 8: Principal component per type of hearing protector (1 to 5): Mean and standard error. (a) PCA 1 and PCA 2 (b) PCA 1 and PCA 3
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