RT - Journal Article T1 - حاصل عمر JF - litbr YR - 2016 JO - litbr VO - 1 IS - 3 UR - http://litbr.faslnameh.org/article-1-145-en.html SP - 23 EP - 40 AB - LA eng UL http://litbr.faslnameh.org/article-1-145-en.html M3 ER -