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München [u.a.]: Weltforum Verl., 1978
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Tübingen: Mohr, 1986
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München; Köln; London: Weltforum-Verl., 1991
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Geneva: International Labour Office, 1986
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[Riyadh, Saudi Arabia]: King Abdullah Petroleum Studies and Research Center, May 2023
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Hamburg: Verlag Weltarchiv; Kiel, Hamburg: ZBW – Leibniz Information Centre for Economics, 1974