(3GdYGejI ai KjGH GdaUMi (B: s (3HdGZJgG (B- (3GeKGdgG (B- (3NUGFUgG (B/s - (3SdjeGf eMeO SdjeGfs ((3GdbGgQI (B: s (3GdYQHi ddfTQ h GdJhRjY,s, 1992)
(3GdcJGH MGUd Ydi GdLGFRI GdGOHjI GdGhdi ddeLeY GddZhi SfI (B1951s
Keywords: (3GddZI GdYQHjIs; (3GdYGejIs