(3CSS GdJfXje GdSjGSi ai GdOhd GdGTJQGcjI (B:s (3OQGSI JCUjdjI ebGQfI(B/s - (3EScfOQ ZWGSis ((3GdbGgQI (B:s [(3GSe GdfGTQ ZjQ eMOO(B],s, 1972)
(3jTJed Ydi EQLGYGJ HHdjhLQGajIs
(3HHdjhLQGajG(B:(3UaMGJ (B749-796s
(3GdfU CZdHg HGddZI GdYQHjI HYV GdfUhU GdEfLdjRjI hGdaQfSjIs
Keywords: (3GdbGfhf GdOSJhQjs; (3GdePgH GdGTJQGcjs