(3GdJaSjQ GdefjQ ai GdYbjOI hGdTQjYI hGdefgL (B:s (3GdeLdO GdNGeS (B/s - (3hgHI GdRMjdis ((3HjQhJ (B:s (3OGQ GdacQ GdeYGUQ, s, 1991)
(3GdeLdO GdNGeS jMJhi Ydi GdLRA GdJGSY hGdLRA GdYGTQs
(3GdfU HGddZI GdYQHjIs
Keywords: (3efGgL Ydhe GdJaSjQs; (3GdTQjYI GdESdGejIs