1. Determination of blastoderm cells in Drosophila melanogaster;Chan,1971
2. Gene Action in Early Development;Davidson,1968
3. A simple apparatus for retrieving density gradients by surface tension;Germain;Anal. Biochem,1974
4. The Germ Cell Cycle in Animals;Hegner,1914
5. Transplantation of posterior polar plasm in Drosophila;Illmensee,1974