セラミックス.窯業.珪酸塩化学工業(便覧.ハンドブック.ポケット... - Japan Search model RDF
(There is only one resource "セラミックス.窯業.珪酸塩化学工業(... (Concept)" with description graph. Other 3 resources are in nested tables, or just refer to the source resource and have no own description)