(3GdOdjd dTNUjI GdWad (B/ s - (3QfOI GHi gfGs ([S.N] : (3GdeDSSI GddHfGfjI GdYQHjI ddJhRjY , s, 1990)
Keywords: (3GdJQHjIs; (3GdGWaGds; (3Yde faS GdWads; (3GdQYGjIs; (3GdQYGjI GdPgfjIs