(3GdhSjW aj bGfhf GdefXeGJ GdOhdjI(B/s - (3CMeOCHh GdhaGs ([(3ecGf GdfTQ ZjQ eMOO(B]:s [(3GdfGTQ ZjQeMOO(B](3,s, 1950)
(3jTJed Ydj EQLGYGJ HHjdhLQGajI HGddZI GdYQHjI hGdEfLdjRjI (B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdbGfhf GdOhdj GdYGes -- (3GdefXeGJ GdOhdjIs