(3GdMUGQ (B/ s - (3GdgeGej, GdWGgQs ((3JhfS (B:s (3GdOGQ GdJhfSjI ddfTQ,s, 1972)
Keywords: (3GdTYQ GdYQHjs; (3GdYUQ GdMOjKs; (3JhfSs