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		Comparative Evaluation of the Tribological Properties of Polymer Materials with Similar Shore Hardness Working in Metal–Polymer Friction Systems
 Daniel Pieniak, Radosław Jedut, Leszek Gil, Włodzimierz Kupicz, Anna Borucka, Jarosław Selech, Grzegorz Bartnik, Krzysztof Przystupa, Zbigniew Krzysiak 
Materials