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1 · Religion and Magic
2 · Nature
3 · Human Being, Man in General
4 · Society, Civilization, Culture
5 · Abstract Ideas and Concepts
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4 · Society, Civilization, Culture
47 · crafts and industries
47B · handicrafts and industries
47B2 · industries
47B21 · industries ~ metal
47B211 · iron and steel industry
47B211(+4) · iron and steel industry (+ materials processed ~ crafts, industries, agriculture)
47B211(+41) · iron and steel industry (+ metals, minerals ~ crafts, industries, agriculture)
47B211(+412) · iron and steel industry (+ base metals ~ crafts, industries, agriculture)
1 available