1. Fitch, W. M.: Systematic zoology. In press (1971a).
2. - Haematologie und Bluttransfusion. Munich: J. F. Lehman 1971b (in press).
3. —, Margoliash, E.: Brookhaven Symp. in Biol.21, 217–242 (1968).
4. —, Markowitz, E.: Biochem. Genet.4, 579–593 (1970).