A comparative assessment of uncrushed-river concrete mix of Hari-River, and Kamar-Kalaq: the two widely used concrete mix in Herat, Afghanistan von Alkozay, Arif, Faqiri, Amanollah, Moheb, Noman, Ahmadi, Khalid Ahmad, Sadat, Sayed Naqibullah, Saddeqi, Mohammad Yaser, Jamshidi, Ahmad Fawad, Sayedi, Mir Mohammad Rateb, Mohammadi, Safiullah

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