(3GdNdGaI hGdNdaGA GdQGTOjf Hjf GdThQi hGdOjebQGWjI (B/ s - (3SGde GdHgfSGhis ([S.N] : (3GdRgQGA ddGYdGe GdYQHi , s, 1991)
Keywords: (3GdNdGaIs; (3YeQ Hf GdNWGHs; (3YKeGf Hf YaGfs; (3GdGSdGe hGdSjGSIs; (3Ydi Hf GHi WGdHs; (3GHh HcQ GdUOjbs