(3GdHjFI (B- (3eTcdGJ h Mdhd (B-s - (3MSjf(B. (3YGOd GdTjNs ((3OGQ GdjGRhQjs (3YeGfs, 1997)
Keywords: (3GdYdhe GdWHjYjIs; (3Yde GdHjFIs