Ernst Hekkel (alm. Ernst Heinrich Philipp August Haeckel; 16 fevral 1834[…], Potsdam, Brendenburq əyaləti[d], Prussiya – 9 avqust 1919[…], Yena, Veymar
(2008). A Brief History of Morphology. In: The Tragic Sense of Life. ErnstHaeckel and the Struggle over Evolutionary Thought. Chicago: University of Chicago
Eizelle, die Zelltheilung und die Conjugation der Infusorien. Frankfurt. Haeckel E (1866) Generelle Morphologie der Organismen. Allgemeine Grundzüge der
Gyllenhal — Leonard Gyllenhaal (1752—1840) Hablizl — Carl Ludwig Hablizl Haeckel — ErnstHaeckel (1834—1919) Hagen — Hermann August Hagen (1817—1893) Hahn — Carl
PMID 16536874. In 1876 Haeckel had discussed the selective infanticide policy of the Greek city of ancient Sparta.Haeckel, Ernst. "The History of Creation