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3प्रकाशित 1999विषय “...Labor unions European Union countries Case studies....”
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5प्रकाशित 2002विषय “...Fast food restaurants Employees Labor unions...”
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6प्रकाशित 1990विषयपुस्तक
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7द्वारा Costello, Cynthia B. (Cynthia Butler)विषय “...Labor unions Insurance companies United States Case studies....”
प्रकाशित 1991
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