(3GdeQGLY ai GdecJHI GdeOQSjI eYfGgG GgejJgG GTcGdgG hXGFagG (B/ s - (3GMeO YHOGddg GdYdis ([S.N] : (3eQcR GdcJGH ddfTQ , s, 1990)
Keywords: (3GdeQGLYs; (3GdGQTGO GdeQLYis