@book{ BA01326856,
  author    = "Doeringer, Peter B. and Piore, Michael J. and United States. Dept. of Labor. Manpower Administration",
  title     = "Internal labor markets and manpower analysis",
  publisher = "Heath",
  year      = "1971",
  URL       = "https://ci.nii.ac.jp/ncid/BA01326856"
}