Second edition, extensively revised as Geschichte der biologischen Theorien in der Neuzeit, pt. l., Leipzig-Berlin, 1913. English translation of pt 2. as The history of biological theories, London, 1930.
Second edition, extensively revised as Geschichte der biologischen Theorien in der Neuzeit, pt. l., Leipzig-Berlin, 1913. English translation of pt 2. as The history of biological theories, London, 1930.