RT - Journal Article T1 - JF - safinahjrn YR - 2021 JO - safinahjrn VO - 18 IS - 70 UR - http://safinahmagazine.ir/article-1-451-fa.html SP - 5 EP - 8 AB - LA eng UL http://safinahmagazine.ir/article-1-451-fa.html M3 ER -