Abstract
The origin of species, the way in which evolution has taken place and is still progressing, seems, even now, to remain an open question. So much so, that three absolutely diverse theories of evolution still find their adherents. These three main theories are so different, that it would seem as if the real nature of the process of species-formation must for ever remain a subject for speculation only, and as if good facts are wholly wanting.
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© 1921 Springer Science+Business Media Dordrecht
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Hagedoorn, A.L., Hagedoorn-Vorstheuvel La Brand, A.C. (1921). Introduction. In: The Relative Value of the Processes Causing Evolution. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-4728-8_1
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DOI: https://doi.org/10.1007/978-94-017-4728-8_1
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-017-4564-2
Online ISBN: 978-94-017-4728-8
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