(3adSWjf GdYQHjI Hjf GdJjFjS h GdJCejd (B/ s - (3efUhQ, YR GdOjfs ((3WQGHdS (B((3djHjG(B) :s (3OGQ EbQC ddWHGYI,s, 1986)
Keywords: (3JGQjN adSWjfs; (3GdUghfjIs