Article PDF
Rights and permissions
About this article
Cite this article
Announcements. Nature 190, 680 (1961). https://doi.org/10.1038/190680a0
Issue Date:
DOI: https://doi.org/10.1038/190680a0
Nature volume 190, page 680 (1961)
Announcements. Nature 190, 680 (1961). https://doi.org/10.1038/190680a0
Issue Date:
DOI: https://doi.org/10.1038/190680a0