(3GYdGe GdehbYjf Yf QH GdYGdejf (B/ s - (3GHf bje GdLhRjI(B: (3TeS GdOjf GHh YHOGddg eMeO Hf GHi HcQ Hf GjhH Hf SYjO GdRQYis ((3HjQhJ (B: s (3GdecJHI GdYUQjI ddfTQ hGdJhRjY , s, 1987)
Keywords: (3GdTQjYI GdGSdGejIs; (3Gdabg GdGSdGeis