@article{744780,
      author = {Avakov, Alexander V.,},
      url = {http://library.usi.edu/record/744780},
      title = {Two thousand years of economic statistics. population, GDP  at PPP, and GDP per capita /, Volume 1,: By rank :},
      recid = {744780},
      pages = {1 online resource (570 pages) :},
}