ENDescription
"An inquiry into the nature and properties of opium" by Samuel Crumpe.
Related Subjects
The graph displays the other subjects mentioned on the same pages as the subject "book on Opium". If the same subject occurs on a page with "book on Opium" more than once, it appears closer to "book on Opium" on the graph, and is colored in a darker shade. The closer a subject is to the center, the more "related" the subjects are.