(3GdUMjM GdeSfO ai GdGeKGd hGdMce (B/ s - (3YcGTI YHOGdefGf GdWjHis ([S.N] : (3ecJHI GdJQGK GdGSdGei , s, 1989)
Keywords: (3GdGeKGd GdYQHjIs; (3GeKGds; (3GdbQGfs