(3GdLGeY dCMcGe GdbQGf (B/ s - (3GdbQWHi (B: (3TeS GdOjf GHhYHOGddg eMeO Hf GMeO Hf GHi HcQ Hf aQM GdNRQLi GdGfOdSis ((3HjQhJ (B: s (3OGQ GdcJH GdYdejI , s, 1988)
Keywords: (3GdbQGf (B- (3GSHGH GdfRhds; (3GdbQGfs; (3GdbQGf (B- (3JaGSjQs