@article{13780,
      author = {Delear, Frank J.},
      url = {http://library.usi.edu/record/13780},
      title = {Igor Sikorsky; his three careers in aviation,},
      publisher = {Dodd, Mead},
      abstract = {A biography of the aeronautical engineer whose  achievements include the multi-motored airplane and the  practical helicopter.},
      recid = {13780},
      pages = {xi, 272 p.},
      address = {New York,},
      year = {1969},
}