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Lua i Stíl Chicago (17ú heag.)Greenhalgh, C., M. Gregory, agus A. Ray. The Changing Structure of UK Production, Trade and Employment: An Analysis Using Input Output Tables 1974-84. 1989.
Lua MLA (9ú heag.)Greenhalgh, C., et al. The Changing Structure of UK Production, Trade and Employment: An Analysis Using Input Output Tables 1974-84. 1989.
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