TY  - RPRT
TI  - Prehatching motility and hatching behavior in the chick.
AU  - V Hamburger
AU  - R Oppenheim
PY  - 1967
DO  - 10.1002/jez.1401660203
UR  - https://pubmed.ncbi.nlm.nih.gov/6080550/
ID  - 6080550
ER  -