(3LQGFe YGdejI ZGeVI (B/s - (3OGQ GdcJGH GdYQHj (B((3OeTb(B).s (3dLfI GdEYOGO hGdJQLeI hGdJCdjas ((3OeTb (B:s (3OGQ GdcJGH GdYQHj,s, 1990)
Keywords: (3GdLQjeI hGdeLQehfs; (3ecGaMI GdLQjeIs