Article PDF
Rights and permissions
About this article
Cite this article
Professor V. Vand. Nature 218, 505 (1968). https://doi.org/10.1038/218505a0
Published:
Issue Date:
DOI: https://doi.org/10.1038/218505a0
Nature volume 218, page 505 (1968)
Professor V. Vand. Nature 218, 505 (1968). https://doi.org/10.1038/218505a0
Published:
Issue Date:
DOI: https://doi.org/10.1038/218505a0