(3GdRMa Gdi ecI(B: (3MbGFb hhKGFb Yf eDGeQI GdJfUjQ ai GdYGde GdGSdGei (B/ s - (3YHOGdhGOhO TdHis ([S.N] : (3GdRgQGA ddGYdGe GdYQHi , s, 1989)
Keywords: (3JGQjNs; (3ecI GdecQeIs; (3GdGSdGe hGdePGgH GdGdMGOjIs; (3GdJcajQs