(3GdLQjeI hGdLfS (B: (3GdGOGH GdbQGfjI dfTQ dbUU GdLQjeI ai GdUMGaI (B/ s - (3YHOGdhgGH cMjds ([S.N] : (3ecJHI GdJQGK GdGSdGei , s, 1991)
Keywords: (3GdUMGaIs; (3GdGNdGb GdUMajIs