RT - Journal Article T1 - عالم ذر JF - safinahjrn YR - 2010 JO - safinahjrn VO - 7 IS - 27 UR - http://safinahmagazine.ir/article-1-631-en.html SP - 169 EP - 181 AB - LA eng UL http://safinahmagazine.ir/article-1-631-en.html M3 ER -