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Report a problem related to object: Wpływ pH roztworu na adsorpcję selektywną pirydyny i jej metylopochodnych na węglu aktywnym = Vliânie ph rastvora na selektivnuû adsorbciû piridina i ego metiloproishodnyh na aktivnom ugle = Effect of pH of solution on the selective adsorption of pyridine and its methylderivates on the active carbon