@article{article_643782, title={Ahmet Önkal Demek}, journal={İSTEM}, pages={617–618}, year={2019}, DOI={10.31591/istem.643782}, author={Yaman, Ahmet}, keywords={Vefeyat,Ahmet Önkal}, abstract={VEFEYAT}, number={34}, publisher={Necmettin Erbakan Üniversitesi}