دلالة ه. Statistical sampling in the practical field of research Analytical study of a sample of Master`s theses in the Faculty of Education at Tishreen University. Tuj-econ [Internet]. 2022Sep.21 [cited 2024May13];44(4):125-37. Available from: https://journal.tishreen.edu.sy/index.php/econlaw/article/view/12513