(3bhGfjf GdGMhGd GdTNUjI (B:s ( 25 /1920 (3, (B25/1929 (3, (B44/1979 (3, (B10 /1985 ) (3eYdbG Ydi fUhUgG (B/ s - (3CTQa eUWai ceGd (B.s ((3GdbGgQI(B:s (3GdbGgQI GdMOjKI ddWHGYI,s, 1990)
Keywords: (3GdegQ(B. s; (3GddYGf(B. s; (3GdWGYI(B.s; (3GdehGQjK(B.s; (3GdEQK(B.s; (3GdhaGI(B.s; (3bGfhf GdCMhGd GdTNUjI (B.s; (3YbhO GdRhGL(B.s