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Jump to: W Number of items: 1. WWardley, P. (1984) Work effort, productivity and mechanization in the Cleveland Ironstone Mines, 1874-1939. In: Northern Universities Economic History Conference , Leeds, UK, October, 1984. |
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Jump to: W Number of items: 1. WWardley, P. (1984) Work effort, productivity and mechanization in the Cleveland Ironstone Mines, 1874-1939. In: Northern Universities Economic History Conference , Leeds, UK, October, 1984. |