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| 柱状組織 (chūjō-soshiki) Geological Terms Dictionary (Bruce Bain and Leslie Oberman) | |||
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| 円柱状構造土壌の River and Water Resources Glossary (Infrastructure Development Institute Japan) ; コラム構造 River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 柱状構造土の構造、 つちのこうぞう River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
