yaseen, A. ., and M. . . Asaad. “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, vol. 41, no. 5, Nov. 2019, https://journal.tishreen.edu.sy/index.php/humlitr/article/view/9190.