(3aJGhi hQSGFd ddeUdjf(B/s - (3GdNdja, CMeO Hf UGdM Hf agO,s ((3GdQjGV, GdSYhOjI (B:s (3eDSSI GdLQjSj,s, 1991)
Keywords: (3aJGhi GdUdGIs