(3GdhdGjI Ydi GdeGd (B: s (3GdGMcGe GdehVhYjI (B- (3GdGNJUGU hGdGLQGAGJ (B/ s - (3MeOj , eMeO ceGd s ((3GdGScfOQjI (B: s (3efTCI GdeYGQa , s, 1987)
Keywords: (3GdbGfhf GdNGU s