Article PDF
Rights and permissions
About this article
Cite this article
[Correspondence]. Nature 221, 886–887 (1969). https://doi.org/10.1038/221886c0
Issue Date:
DOI: https://doi.org/10.1038/221886c0
Nature volume 221, pages 886–887 (1969)
[Correspondence]. Nature 221, 886–887 (1969). https://doi.org/10.1038/221886c0
Issue Date:
DOI: https://doi.org/10.1038/221886c0