RT - Journal Article T1 - 5 JF - jsci YR - 1977 JO - jsci VO - 1356 IS - 2 UR - http://jsci.khu.ac.ir/article-1-1250-fa.html SP - 0 EP - 0 K1 - 5 AB - 5 LA eng UL http://jsci.khu.ac.ir/article-1-1250-fa.html M3 ER -