(3GdSfeG ai GdhWf GdYQHi (B/ s - (3LGf GdcSGfs ([S.N] : (3GdeLdS GdhWfi ddKbGaI hGdafhf hGdGOGH , s, 1982)
Keywords: (3UfGYI hJLGQIs; (3GdGadGe GdSjfeGFjIs; (3GdGfJGL GdSjfeGFis; (3GdSjfeGFjhfs; (3GdSjfeG GdYQHjIs