(3eMGVQGJ ai GdLRGA GdLfGFi (B:s (3GdYbhHI (B/s - (3Ydi MehOgs ([(3ecGf GdfTQ ZjQ eMOO(B] :s [(3GdfGTQ ZjQ eMOO(B],s, 1997)
(3jTJed Ydi GQLGYGJ HHdjhLQGajI(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdbGfhf GdLfGFis; (3GdYbhHIs; (3GdLRGA GdLfGFjs