Article PDF
Rights and permissions
About this article
Cite this article
“The Advancement of Science”. Nature 215, 1055 (1967). https://doi.org/10.1038/2151055a0
Issue Date:
DOI: https://doi.org/10.1038/2151055a0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.