Secret treasure-troves restored.
D000818:Animals; D003469:Culture; D005858:Germany; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049674:History, 21st Century; D007558:Italy; D019021:Natural History / Q000266:history* / Q000639:trends*; D010506:Periodicals as Topic / Q000639:trends; D012108:Research Personnel / Q000266:history; D013048:Specimen Handling / Q000266:history* / Q000639:trends*; D014495:Universities / Q000266:history