Haeckel's hierarchies.
Kemp
M
M
Department of the History of Art, University of Oxford, UK. martin.kemp@trinity.oxford.ac.uk
D000818:Animals; D001296:Audiovisual Aids / Q000266:history; D001695:Biology / Q000266:history*; D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008954:Models, Biological; D010802:Phylogeny