TY  - RPRT
TI  - The 'breech head' and its relevance.
AU  - C M Haberkern
AU  - D W Smith
AU  - K L Jones
PY  - 1979
DO  - 10.1001/archpedi.1979.02130020044009
UR  - https://pubmed.ncbi.nlm.nih.gov/420184/
ID  - 420184
ER  -