(3QjMGfI GdcJGH hfLYI GdefJGH (B/ s - (3dSGf GdOjf Hf GdNWjH (B: (3dSGf GdOjf GHh YHO Gddg eMeO Hf YHO Gddg Hf SYjO GdSdjeGfj GdZQfGWjs; (3eMeO YHOGddgs; (3Hf SYjO GdZQfGWis ((3GdbGgQI (B: s (3ecJHI GdNGfLi , s, 1981)
Keywords: (3GdGMhGd GdSjGSjIs; (3GdGfOdSs; (3GdeZQHs; (3GdJGQjNs; (3GdeQSdGJs