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Medical supervision and service in industry
National Industrial Conference Board - 1931
Persistent link: https://www.econbiz.de/10002871150
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The cost of living in twelve industrial cities
1928
Persistent link: https://www.econbiz.de/10001689882
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The cost of living in twelve industrial cities
National Industrial Conference Board - 1928
Persistent link: https://www.econbiz.de/10012793536