ウーマンのツェッテルカステンには、約9万枚のメモが入っていました。
Luhmann was famous for his extensive use of the "slip box" or Zettelkasten note-taking method. He built up a zettelkasten of some 90,000 index cards for his research
ウーマンのツェッテルカステンには、約9万枚のメモが入っていました。
Luhmann was famous for his extensive use of the "slip box" or Zettelkasten note-taking method. He built up a zettelkasten of some 90,000 index cards for his research