(3ghdGA GdQLGd ef GdGbHGW (B/ s - (3deYi GdeWjYis ([S.N] : (3ecJHI GdGfLdhGdeUQjI , s, 1989)
Keywords: (3eUQs; (3GdGMhGd GdGLJeGYjIs; (3GdGMhGd GdSjGSjIs; (3GdGbHGWs; (3GdUMGaI GdeUQjIs