(3GdOQGSGJ GdfaSjI YfO GdeSdejf(B: (3hGdZRGdi HhLg NGU (B/ s - (3YHOGdcQje GdYKeGfs ([S.N] : (3ecJHI hgHI , s, 1981)
Keywords: (3GdadSaI GdGSdGejIs; (3GdGNdGb GdGSdGejIs; (3GdZRGdis; (3GdGSdGe hYde GdfaSs