1. Entwicklungsmechanische Studien am Embryo von Triton taeniatus

   • Oskar Levy

   OriginalPaper Pages: 335 - 379

2. Contributions toward a theory of regulation

   • C. M. Child

   OriginalPaper Pages: 380 - 426

3. Della economia di sostanza nelle ossa cave

   • Paolo Enriques

   OriginalPaper Pages: 427 - 465

4. Literatur

   Legacy Pages: 466 - 468