Description
Haeckel, Ernst Heinrich Philipp August
http://www.tropicos.org/Person/19489
Haeckel, Ernst, 1834-1919
See also: http://id.loc.gov/authorities/names/n50032763
Related Subjects
The graph displays the other subjects mentioned on the same pages as the subject "Haeckel, E.". If the same subject occurs on a page with "Haeckel, E." more than once, it appears closer to "Haeckel, E." on the graph, and is colored in a darker shade. The closer a subject is to the center, the more "related" the subjects are.