Article PDF
Rights and permissions
About this article
Cite this article
BRITISH SCIENCE. Nature 352, 361 (1991). https://doi.org/10.1038/352361b0
Issue Date:
DOI: https://doi.org/10.1038/352361b0
Nature volume 352, page 361 (1991)
BRITISH SCIENCE. Nature 352, 361 (1991). https://doi.org/10.1038/352361b0
Issue Date:
DOI: https://doi.org/10.1038/352361b0