(3GdGOH GdGaQjbi (B((3YGde GdeYQaI (B171) / s - (3Ydi TdTs ([S.N] : (3GdeLdS GdhWfi ddKbGaI hGdafhf hGdGOGH , s, 1993)
Keywords: (3GdGOH GdYQHis; (3GaQjbjGs; (3JGQjN hfbOs