TY  - RPRT
TI  - (A modified technique using carbon dioxide gas).
AU  - R L Edwards
PY  - 1966
DO  - 10.1111/j.1471-0528.1966.tb06072.x
UR  - https://pubmed.ncbi.nlm.nih.gov/5919088/
ID  - 5919088
ER  -