(3GdYQGb Hjf (B1921-1927: s (3OQGSI aj JWhjQ GdYdGbGJ GdYQGbjI(B- (3GdHQjWGfjI hGKQgG aj JWhQ GdYQGb GdSjGSj eY OQGSI aj GdQCj GdYGe GdYQGbj (B/ s - (3GdNWGH , QLGA MSjf MSfj s ((3HZOGO (B: s (3OGQ GdMQjI ddWHGYI hGdfTQ , s, 1977)
Keywords: (3GdYdGbGJ GdOhdjI s