books.google.dehttp://books.google.de/books/about/Encyclopaedia_Perthensis_Or_Universal_Di.html?hl=de&id=qkdQAAAAMAAJ&utm_source=gb-gplus-shareEncyclopaedia Perthensis; Or Universal Dictionary of the Arts, Sciences, Literature, &c. Intended to Supersede the Use of Other Books of Reference
