فهرس المقالات Mehdi Yazdi المقاله 1 - Biostratigraphy of Devonian-Carboniferous boundary in Tuyeh-Darvar section, north of Iran 10.30495/ijes.2020.673332 Mohammad Taghi Najjarzadeh Ali Reaza Ashouri Mehdi Yazdi Ali Bahrami Iranian Journal of Earth Sciences , العدد 2 , السنة 12 , بهار 2020
