(3GdebGdI ai GOH GdYbGO (B/ s - (3YHOGdbGOQ QRb GdWhjds ([S.N] : (3GdOGQ GdeUQjI GddHfGfjI , s, 1987)
Keywords: (3GdGOH GdYQHis; (3GdebGdGJ GdYQHjIs; (3GdebGdGJs; (3YHGS eMehO GdYbGOs; (3GdebGdIs; (3JGQjN hfbOs