(3GOH GdYQH ai YUQ GdLGgdjI (B/ s - (3MSjf GdMGL MSfs ([S.N] : (3GdeDSSI GdLGeYjI ddOQGSGJ hGdfTQ hGdJhRjY , s, 1990)
Keywords: (3GdTYQ GdLGgdis