![[double bond, length as m-dash]](https://www.rsc.org/images/entities/char_e001.gif)
C double bond The first page of this article is displayed as the abstract.
![Electronic levels of polyatomic molecules. I.—Some levels of the C [[double bond, length as m-dash]] C double bond](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=TF9343000093&imageInfo.ImageIdentifier.Year=1934)
![[double bond, length as m-dash]](https://www.rsc.org/images/entities/h2_char_e001.gif)
C double bond
C. P. Snow and C. B. Allsopp, Trans. Faraday Soc., 1934, 30, 93 DOI: 10.1039/TF9343000093
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