parchment vellum

基本解释

Bookworms were a problem in the Middle Ages, but a decent vellum parchment could last 300 years.
FORBES: Lucretius's Legacy Depended On The Toughness Of Vellum. What Will Save Ours?
Conservationists working in a new branch of the library still face the task of removing ash deposits between pages, repairing parchment volumes and vellum spines that split in the fierce heat—a painstaking process that involves weeks of work on each book.
ECONOMIST: The Duchess Anna Amalia library