مقالة · مجلة · 2016

An Assessment on the Production of Abrasive Sandpaper from Locally Sourced Materials

Mfon Udo Obot, D. S. Yawas, S.Y. Aku, David O. Obada

DOAJ (DOAJ: Directory of Open Access Journals)

• وصول مفتوح · أخضر