(3GdGMO GdCShO (B: s (3JUhQ CeQjcj Ugjhfj ddYed GdaOGFj GdadSWjfj (B/ s - (3eTYd, MSf ESeGYjds ((3YeGf (B:s (3OGQ GdLdjd,s, 1984)
Keywords: (3adSWjfs; (3JGQjN(B-1990s; (3GdEQgGH GdUgjhfjs