1. The time of ovulation in chimpanzees;Elder;Yale J. Biol. & Med.,1938
2. A ten and one-half day chimpanzee embryo;Elder;‘Yerkes A.’ J. Am. Med. Assn.,1938
3. The sexual cycle of the chimpanzee;Elder;Anat. Rec.,1936
4. On a complete normal 12-day human ovum of the pre-villous stage;Hertig;Anat. Rec.,1938
5. Carnegie Inst. Wash., Pub. no. 501;Heuser,1938