(3JGQjN fLO h edMbGJg h gh jTJed Ydi fHPGJ KdGK aj fhGMj fLO h eMeO Hf YHO GdhgGH h GdhgGHjg h Bd SYhO efP fTCJge (B/ s - (3GdQjMGfj, Cejfs ((3HjQhJ (B:s (3OGQ GdcGJH GdYQHj,s, 1981)
Keywords: (3GdSYhOjIs; (3GdJGQjNs; (3fLOs