Article PDF
Rights and permissions
About this article
Cite this article
Announcements. Nature 243, 312 (1973). https://doi.org/10.1038/243312b0
Issue Date:
DOI: https://doi.org/10.1038/243312b0
Nature volume 243, page 312 (1973)
Announcements. Nature 243, 312 (1973). https://doi.org/10.1038/243312b0
Issue Date:
DOI: https://doi.org/10.1038/243312b0