(3ebOeI aj GdJGQjN GdGbJUGO GdYQHj (B.s - (3GdOhQj , YHO GdYRjR (B.s ((3HjQhJ (B:s (3OGQ GdWdjYI ddWHGYI hGdfTQ ,s, 1969)
Keywords: (3GdGbJUGO (B- (3JGQjN YQHj (B.s