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. 1950 Oct;4(4):221-33.
doi: 10.1136/jech.4.4.221.

Observations on all births (23,970) in Birmingham, 1947. I. Duration of gestation

J R GIBSON, T McKEOWN

Observations on all births (23,970) in Birmingham, 1947. I. Duration of gestation

J R GIBSON et al. Br J Soc Med. 1950 Oct.
No abstract available

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