(3GdWQjb Gdi LeGYg GdeSdejf (B/ s - (3MSjf Hf eMeO Ydi LGHQs ([S.N] : (3OGQ GdhaGA ddWHGYI hGdfTQ hGdJhRjY , s, 1987)
Keywords: (3GdGSdGes; (3OYhIs; (3GdGNhGf GdeSdehfs