(3GdWH GdfHhi (B/ s - (3eUWai eMehOs; (3YGOd GdGRgQis; (3GHf bje GdLhRjI(B: (3TeS GdOjf GHh YHOGddg eMeO Hf GHi HcQs ((3GdbGgQI (B: s (3TQcI hecJHI heWHYI eUWai GdHGHi GdMdHi hGhdGOg , s, 1961)
Keywords: (3GdWH GdfHhis; (3GdWH GdGSdGeis