Publication
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Les Ateliers de Taille du Pays d’Aubel Article
Staringia, 6(1), 52-54.January 1981
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Prähistorischer Bergbau in der Tschechoslowakei Article
Staringia, 6(1), 54-57.January 1981
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Prehistoric Flint Mining at Ryckholt-St. Geertruid (Netherlands) and Grimes Graves (England) Article
Staringia, 6(1), 57-62.January 1981
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Flint mining and early copper mining in the South-East Europe Article
Staringia, 6(1), 63-64.January 1981
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Microfractographie des silex de tribulum: usure et microfissures de fatigue Article
Staringia, 6(1), 94-96.January 1981
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Geknipt Article
De Strandloper, 13(3), 22-22.January 1981
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Plantenvondsten in 1980 Article
De Strandloper, 13(1), 13-14.January 1981
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Inventarisatie Nieuw-Leeuwenhorst Article
De Strandloper, 13(1), 25-25.January 1981