(3GdJaQjb GdbVGFj ddVQQ (B- (3OQGSI ebGQfI (B/ s - (3YHGS, QYO jGSjfs; (3GdRdej, eUWai GHQGgjes; (3LGeYI HZOGO (B.s (3cdjI GdbGfhf hGdSjGSI (B.s (3bSe GdbGfhfs (1987)
(3GdfU HGddZI GdYQHjI ; GdeSJNdU HGddZI GdYQHjI hGdGfcdjRjIs
Keywords: (3GdbGfhf GdNGUs -- (3GdYQGbs