(3cJGH GdGdaGX hGdGSGdjH (B/ s - (3eMeO Thbi Gejf (B((3JYdjb(B)s ([S.N] : (3GdgjFI GdYGeI dTFhf GdeWGHY GdGejQjI , s, 1985)
Keywords: (3GddZI GdYQHjIs; (3GdaGXs; (3GdfWbs; (3GdeJQGOaGJ hGdGVOGOs