(3GdJMOjK GdSjGSi ai GdeLJeY GdeUQi (B((3OQGSI ShSjhJGQjNjI(B) / s - (3GdSjO YHOGdMdje GdRjGJs ([S.N] : (3OGQ GdeYQaI GdLGeYjI , s, 1990)
Keywords: (3eUQs; (3JGQjNs; (3GdGMhGd GdSjGSjIs; (3GdJGQjN GdMOjKs