(3GHMGK ai GdJGejfGJ GdYjfjI (B/ s - (3GSYO OjGHs ([S.N] : (3GdeDSSI GdLGeYjI ddOQGSGJ hGdfTQ hGdJhRjY , s, 1988)
Keywords: (3GdbGfhfs; (3GdGadGSs; (3GdJCejfGJ GdGLJeGYjIs; (3GdJCejf Ydi GdMjGIs; (3JYhjVGJ GdYeGds