RT - Journal Article T1 - JF - safinahjrn YR - 2011 JO - safinahjrn VO - 8 IS - 32 UR - http://safinahmagazine.ir/article-1-537-fa.html SP - 1 EP - 4 AB - LA eng UL http://safinahmagazine.ir/article-1-537-fa.html M3 ER -