yaseen, A. ., & Asaad, M. . . (2019). Difficulties of the physical Educational Environment Facing the Teaching of Biology and Land Curriculum From the point of view of the Subject Teachers (A Field Study in basic education schools a second cycle in Lattakia city). Tishreen University Journal- Arts and Humanities Sciences Series, 41(5). Retrieved from https://journal.tishreen.edu.sy/index.php/humlitr/article/view/9190