1
著者: Whitehill, Michael W.
Iowa City, Center for Labor and Management, University of Iowa, 1968
Iowa City, Center for Labor and Management, University of Iowa, 1968
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図書
2
著者: Whitehill, Michael W.
Iowa City, Center for Labor and Management, University of Iowa, 1968
Iowa City, Center for Labor and Management, University of Iowa, 1968
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政府資料
図書
3
著者: Daykin, Walter Lesley, 1893-, Sinicropl, Anthony V., Whitehill, Michael W.
Iowa City, Center for Labor and Management, University of Iowa, 1967
Iowa City, Center for Labor and Management, University of Iowa, 1967
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図書