4 · Society, Civilization, Culture
47 · crafts and industries
47D · machines; parts of machines; tools and appliances
47D2 · machine driven by human or animal power
47D21 · handmill
47D21(+3) · handmill (+ technical aspects ~ crafts, industries, agriculture)
47D21(+31) ·
handmill (+ processes by hand ~ crafts, industries, agriculture)