(3adSaI GdYbhHGJ aj GdbGfhf hGdTQY GdESdGej (B/s - (3LYaQ, Ydj eMeOs ((3HjQhJ (B:s (3GdeDSSI GdLGeYjI ddOQGSGJ,s, 1997)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3bGfhf GdYbhHGJs -- (3dHfGfs; (3GdYbhHGJ (B((3abg ESdGej(B)s