| 11552 | Cleavage of Artificially Constricted Sand Dollar Eggs | | | | | | |
| 12011 | Reinvestigation of Regional Differences in Bursting Strength of Cleaving Sand Dollar (Echinarachnius parma) Eggs | | | | | | |
| 11793 | Reversing cytoplasmic flow in constricted eggs of the sand dollar (Echinarachnius parma) | | | | | | |
| 11223 | Spawning Season of the Green Urchin, Strongylocentrotus drobachiensis | | | | | | |
| 11602 | Stimulation of Cell Surface Contraction by Isolated Asters of the Mitotic Apparatus in Echinarachnius parma Eggs | | | | | | |
| 11325 | The Relation Between Initial Equatorial Cell Diameter and Cleavage Constriction Rate | | | | | | |