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. 1942 Nov;4(6):521–531.

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William Owen Baldwin

Emmett B Carmichael

Emmett B Carmichael

¹University Alabama

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¹

¹University Alabama

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License, which permits non-commercial use and redistribution provided that the original author and source are credited.

PMC Copyright notice

PMCID: PMC7942507 PMID: 33943752

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Fig. 1.
on p.522

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