1. Brachet, J.: Chemical embryology. New York: Interscience Publ. 1950.
2. Brächet, J.: Biochemical cytology. New York: Academic Press 1957.
3. - Bronn's Klassen und Ordnungen des Tier-Reichs, 4. Ic. II. Leipzig: C. F. Winter 1917.
4. Brøndsted, H. V.: Planarian regeneration. Biol. Rev. 30, 65?126 (1955).
5. Brøndsted, A., and H. V. Brøndsted: Distribution of neoblasts throughout the anterior-posterior body axis in Euplanaria torva and Dendrocöleum lacteum. (In prep.)