@article{1490780,
      note = {Includes index.},
      author = {Perlus, Barry,},
      url = {http://library.usi.edu/record/1490780},
      title = {Celestial mirror : the astronomical observatories of Jai  Singh II /},
      recid = {1490780},
      pages = {1 online resource (xvii, 149 pages) :},
}