(3eHGOF GdbGfhf GdJLGQj (B: s (3OQGSI aj bGfhf GdeTQhY GdQCSeGdj (B/ s - (3OhjOGQ, gGfj eMeO s ((3HjQhJ (B: s (3GdeDSSI GdLGeYjI ddOQGSGJ hGdfTQ hGdJhRjY,s, 1997)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B. s
Keywords: (3GdbGfhf GdJLGQj s; (3GdQCSeGdjIs; (3GdHfhcs