(3ai bdH GdYGde GdKGdK (B: (3LPhQ GdabQ (B/ s - (3gGQjShf jhds; (3GdgGe YKeGfs; (3jhd, gGQjShfs ([S.N] : (3ejOJh ddJfejI hGdQYGjI GdUMjI , s, 1990)
Keywords: (3GdOhd GdfGejIs; (3GdGMhGd GdGbJUGOjIs; (3GdehGQO GdGbJUGOjIs; (3GdabQs; (3GdcKGaI GdScGfjIs