Drinking water quality of various sources in Peshawar, Mardan, Kohat and Swat districts of Khyber Pakhtunkhwa province, Pakistan/Qualidade de agua potavel de varis fontes dos distr... von Awan, F, Ali, M.M, Afridi, I.Q, Kalsoom, S, Firyal, S, Nawaz, S, Akhtar, R, Iqbal, A, Saeed, S, Naseer, R, Mehmood, T, Luqman, N, Ahmad, H.M, Sadia, H, Taseer, M.S.A, Khan, A.R, Rafique, N

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