(3GdJcGed GdGbJUGOj Hjf GdHdOGf GdfGejI (B:s (3GJLGgGJg h JfGbVGJg eY deMI NGWaI Yf GdJYGhf GdGbJUGOj GdYQHj (B/s - (3bjJGdj a (B. (3Tejdjhas ((3HjQhJ (B:s (3OGQ GdWdjYI ,s, 1980)
Keywords: (3GdHdOGf GdfGejI s; (3GdJYGhf GdGbJUGOjs; (3GdJcGed GdGbJUGOj s