(3GdeQUaGhj ai CUhd GdELQGAGJ GdLfGFjI (B/s - (3MSf UGOb GdeQUaGhjs ((3dG jhLO ecGf fTQ eMOO (B:s (3dG jhLO fGTQ eMOO,s, 1981)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdbGfhf GdLfGFjs; (3bGfhf GdELQGAGJ GdLfGFjIs