Khamis, Tarek, AND 		Hassan, Samer.
" The impact of using the strategy of similarities in the acquisition of concepts and development of the skills of the histor" <em>Journal of Tikrit university for humanities - مجلة جامعة تكريت للعلوم الانسانية</em> [Online], Volume 24 Number 8 (31 March 2019)