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Reclus, Élisée
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Bellezza, Giuliano
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Corna Pellegrini, Giacomo
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Vallega, Adalberto
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George, Pierre
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Pinchemel, Philippe
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George, Pierre
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Lacoste, Yves
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Gourou, Pierre
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Lemmi, Enrica
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Pinna, Sergio
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Barbieri, Giuseppe
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Harper, Robert Alexander
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Colloquio internazionale sul tema Geografia e percezione dell'ambiente <1979 ; Milano>
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International seminar Global environmetal change: geographical reflections on its perception and evaluation <1993 ; Milano>
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