(3JMaI GdGOjH HeG aj GdbQGf ef GdZQjH (B/ s - (3GdGfOdSj, GKjQ GdOjf GHj MjGfs; (3eWdhH , GMeO s; (3GdMOjKj , NOjLI s ((3HZOGO(B[(3GdYQGb(B]: s (3eWHYI GdYGfj , s, 1977)
Keywords: (3GdYQGbs -- (3eYGLes