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      <title>Production, pollution, protection /</title>
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      <title>Natural language processing in prolog : an introduction to computational linguistics/</title>
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      <title>The essential principles of the Wealth of nations /</title>
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      <title>Frontiers of environmental economics /</title>
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      <title>Exhaustible resources, optimality, and trade /</title>
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      <title>Scarcity and growth reconsidered /</title>
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      <title>Mapping the impacts of recent natural disasters and technological accidents in Europe /</title>
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      <title>Life for nature 2000 : 10 years implementing the regulation</title>
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      <title>Δίκτυα διανομής βιολογικών προϊόντων : ανάλυση των δικτύων διανομής και των παραγόντων οι οποίοι τα επηρεάζουν, στην Ελλάδα, την Ευρωπαϊκή Ένωση και τις υπόλοιπες χώρες του κόσμου με έμφαση τη Γερμανία, Δανία, Η.Π.Α. και Ιαπωνία. Προβλήματα και προτάσεις επίλυσης /</title>
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      <title>Declaration of natural human rights /</title>
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      <title>Final document : general statements, introductory address, messages : sixteenth conference, Mt. Kopaonik, December 13-17, 2003 /</title>
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      <title>A Strategy for resources : a Science Policy Foundation symposium held in Eindhoven, the Netherlands, September 18 and 19, 1975 /</title>
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      <title>Arctic environment: European perspectives: why Europe should care?/</title>
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