(3GdbVjI (B.. (3ef GdPj jMce eUQ ??s - (3GdTGaYj HTjQ s ((3GdbGgQI (B:s (3OGQ fTQ GdKbGaI (B,s, 1990)
. 240-220 (3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3GdSjGSI h GdMcheI GdeUQjI s; (3Mce eUQ s; (3QDSGA eUQjjf s; (3SjGSI eUQ s