(3Yf TYH adSWjf GdYQHi(B.s (3efXeJg (B- (3ejKGbg (B- (3eTcdGJg (B/s - (3CMeO UObi GdOLGfis ((3GdbGgQI (B:s (3OGQ GdeSJbHd GdYQHi,s, 1986)
(3GdfU HGddZI GdYQHjIs
Keywords: (3JGQjN GdSjGSIs; (3GdbGfhf GdOSJhQis