(3GdYbO GdaQjO (B- ( 8 ) - (3CHfGA GdfhQ (B- (3GdLRA GdKGdKs - (3GdGfOdSj(B. (3GHj YeQ CMeO Hf eMeO Hf YHO QHg s ((3OGQ GdeSjQIs (3HjQhJs, 1981)
Keywords: (3GdCOH GdYQHj (B- (3efhYGJ s