(3bGfhf GdCYeGd (B:s (3OQGSI fXQjI hJWHjbGJ YedjI (B/s - (3HhPjGH, SdjeGfs; (3GdHjWGQ, YHO Gddg EdjGSs ((3HjQhJ (B:s (3OGQ GdYde ddedGjjf,s, 1988)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdTQcGJs -- (3bhGfjf hJTQjYGJs -- (3dHfGfs; (3GdbGfhf GdJLGQjs -- (3dHfGfs