(3GdEeGe Ydj GdbGQF hCKQg aj Yde GdMOjK (B/s - (3bhJdGj, Ndjd EHQGgje(B.s ((3HjQhJ (B:s (3OGQ GdHTGFQ GdESdGejI,s, 1987)
Keywords: (3Ydj GdbGQj, Ydj Hf eMeO GdgQhj,s -- (3GdedG,s -- (3J(B. 1014 (3g`(B.s