(3GdGOH GdYQHi ai GdGfOdS (B: s (3JWhQg (B- (3ehVhYGJg hGTgQ GYdGeg s - (3Ydi eMeO SdGeI s ((3HjQhJ (B: s (3GdOGQ GdYQHjI ddehShYGJ, s, 1989)
Keywords: (3GdGOH GdYQHis; (3GdGOH GdGfOdSis; (3GdehTMGJ GdGfOdSjIs