| author | date | title | journal / publication | Child CM | 1913 | Studies on the Dynamics of Morphogenesis and Inheritance in Experimental Reproduction. VI. The Nature of the Axial Gradients in Planaria and Their Relation to Antero-Posterior Dominance, Polarity and Symmetry. | Archiv. für Entwicklungsmechanik der Organismen, 37: 108-158 |
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