(3GdLf hJdHSg HGdGfSGf hYdGLI HGdbQGf (B/ s - (3YcGTI YHOGdefGf GdWjHis ([S.N] : (3ecJHI GdJQGK GdGSdGei , s, 1992)
Keywords: (3GdTjGWjf hGdLGf ai GdOjf hGdadcdhQs