(3GdGYeGd GdQjGVjI dHgGA GdOjf GdYGedi (B/ s - (3GdYGedi (B, (3eMeO HgGAGdOjfs; (3LdGd Thbis ((3GdbGgQI (B: s (3OGQ GdTQhb , s, 1981)
Keywords: (3GdLHQs; (3GdQjGVjGJs; (3GdeNWhWGJ GdYQHjIs