Organisation for Economic Co-operation and Development. (1981). Austria: 1981. OECD Publishing.
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Chicago-čujuhus (17. p.)
Organisation for Economic Co-operation and Development. Austria: 1981. Paris: OECD Publishing, 1981.
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MLA-čujuhus (9. p.)
Organisation for Economic Co-operation and Development. Austria: 1981. OECD Publishing, 1981.
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