TY - JOUR T1 - TT - نمایۀ سال ششم JF - Yektaweb_Journals JO - Yektaweb_Journals VL - 7 IS - 26 UR - http://refahj.uswr.ac.ir/article-1-17-fa.html Y1 - 2007 SP - 309 EP - 328 N2 - M3 ER -