alhatemy mougd hadi, mahboba mohammed hamed. Improvement of Retread Blends Composed of Natural Rubber(Nr) And Polybutadiene Rubber(Br). NUCEJ. 2008;11(3):478-484. Accessed December 23, 2024. https://oldjournal.eng.nahrainuniv.edu.iq/index.php/main/article/view/545